Nonwoven tactile sheets, preparation methods and applications

Abstract

This invention provides a nonwoven fabric tactile sheet, its preparation method, and its application. The sheet comprises a nonwoven fabric layer, a barrier layer, and a support layer sequentially stacked through an adhesive layer. The nonwoven fabric layer is a core-sheath composite fiber meltblown fabric, with a polyethylene sheath and a polypropylene core. The adhesive layer, barrier layer, and support layer mainly contain polyethylene-based materials and ethylene-vinyl alcohol copolymers. The preparation method includes co-extrusion molding of the laminate, two-stage extrusion lamination with the nonwoven fabric layer, hot pressing, and curing treatment. The sheet shown in this invention possesses a uniform and stable tactile feel, good interlayer bonding strength, and molding adaptability, making it suitable for various daily chemical packaging products such as toothpaste tubes and cosmetic tubes.

Description

Technical Field

[0001] This invention relates to the field of composite sheet technology, and more specifically to a nonwoven tactile sheet. Background Technology

[0002] Sheet tubes, as an important packaging form in the daily chemical, cosmetic, and pharmaceutical industries, are typically made from multi-layered composite sheets. Their structure generally combines multiple materials, offering barrier properties, flexibility, and aesthetics. Currently, most sheet tube products in the industry feature smooth surfaces or rely on subsequent printing processes to enhance visual and tactile appeal. For example, to achieve a matte or smooth tactile effect, traditional production processes generally employ a process of primer coating, printing, varnish application, and curing. This process requires a primer coating to enhance adhesion, followed by pattern printing, application of a special tactile varnish, and finally, UV or heat curing to set the coating. While this process can achieve certain surface effects, it involves many steps, requires significant equipment investment, has a long production cycle, and presents technical challenges in controlling coating thickness uniformity, easily leading to problems such as a rough feel and insufficient varnish adhesion causing it to peel off.

[0003] Therefore, current sheet tube production still faces a series of limitations in pursuing surface tactile effects, such as complex processes, high costs, difficulty in quality control, and high environmental energy consumption. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art, improve the appearance and tactile performance of existing sheets, and alleviate the cumbersome and complex nature of existing production processes to a certain extent.

[0005] To achieve the above objectives, the technical solution provided by the present invention is as follows.

[0006] In a first aspect, the present invention provides a nonwoven fabric tactile sheet, comprising a nonwoven fabric layer, a barrier layer, and a support layer sequentially stacked by an adhesive layer; The adhesive layer comprises a polyethylene material, the barrier layer comprises an ethylene-vinyl alcohol copolymer, and the support layer comprises a polyethylene material. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure. The composite fiber includes a sheath layer and a core layer. The sheath layer includes polyethylene materials, and the core layer includes polypropylene materials.

[0007] As a preferred technical solution The nonwoven fabric layer has a basis weight of 30-60 gsm, wherein the mass ratio of the skin layer to the core layer is 3:7-7:3; the melt flow index of the skin layer material is greater than that of the core layer material; and / or The outer layer polyethylene has a melt index of 1.6~2.4 g / 10 min at 190℃ / 2.16 kg; the core layer polypropylene has a melt index of 1.4~2.2 g / 10 min at 190℃ / 2.16 kg.

[0008] As a preferred technical solution, the sheath and core of the composite fiber in the nonwoven fabric layer have an eccentric covering structure, with the sheath covering the core layer at a rate of 60% to 95%; the fineness of the composite fiber is 1.5 to 3.5 dtex, and the monofilament strength is ≥2.5 cN / dtex; the porosity of the nonwoven fabric layer is 40% to 70%, and the average pore size is 5 to 25 μm.

[0009] As a preferred technical solution, the surface of the nonwoven fabric layer is subjected to corona treatment; the power of the corona treatment is 100~500 W, the treatment speed is 5~20 m / min, and the electrode gap is 1.0~2.5 mm.

[0010] As a preferred technical solution The adhesive layer comprises a blend of low-density polyethylene and medium-density polyethylene; and / or The barrier layer comprises a blend of ethylene-vinyl alcohol copolymer and polyethylene; and / or The support layer comprises a mixture of high-density polyethylene, low-density polyethylene, and color masterbatch.

[0011] As a preferred technical solution The adhesive layer comprises, by weight percentage: 75%~85% low-density polyethylene with a melt index of 6.5~7.5g / 10min at 190℃ / 2.16kg, and 15%~25% medium-density polyethylene with a melt index of 3.5~4.5g / 10min at 190℃ / 2.16kg; and / or The barrier layer comprises, by weight percentage: 18%~25% high-density polyethylene, 62%~75% low-density polyethylene, and 5%~15% ethylene-vinyl alcohol copolymer; and / or The support layer comprises, by weight percentage: 37%~43% high-density polyethylene, 47%~53% low-density polyethylene, and 7%~13% color masterbatch.

[0012] As a preferred technical solution The adhesive layer further comprises, by weight percentage: 3% to 6% maleic anhydride-grafted polyethylene; and / or The barrier layer further comprises, by weight percentage: 1% to 5% polyamide compatibilizer; and / or The support layer also includes, by weight percentage: 2% to 5% ultra-high molecular weight polyethylene.

[0013] Secondly, the present invention provides a method for preparing a sheet having any of the above-mentioned technical features, comprising the following steps: S1. Provides a non-woven fabric layer and a laminate comprising an adhesive layer, a barrier layer, an adhesive layer, and a support layer in sequence; S2. The nonwoven fabric layer and the laminate are bonded together as one unit through an adhesive layer on the outer surface of the laminate. S3. Perform hot pressing or winding on the composite structure; S4. Perform a curing treatment on the structure after hot pressing or winding.

[0014] As a preferred technical solution In S1, the thickness of the adhesive layer in the laminate is 15~25 μm, the thickness of the barrier layer is 100~140 μm, and the thickness of the support layer is 90~110 μm; and / or In S1, the laminate is prepared by a co-extrusion process. The adhesive layer, barrier layer, and support layer are melted and plasticized by independent extruders and then conveyed to the co-extrusion die for lamination in a preset order. The die temperature is 180~320℃, and the extruder screw speed is 20~80 rpm. After each layer of melt is extruded through the die outlet, it is drawn and cooled by cooling rollers to form the laminate with uniform thickness; and / or In S2, the lamination of the nonwoven fabric layer with the laminate includes two extrusion lamination processes: in the first lamination, the support layer and the barrier layer are extruded and laminated through a first adhesive layer; in the second lamination, the semi-finished product obtained from the first lamination is extruded and laminated with the nonwoven fabric layer through a second adhesive layer; and / or In S2, the lamination method is hot-press lamination or hot-roll lamination, the lamination temperature is 100~140℃, the lamination linear pressure is 30~80 N / cm, and the lamination speed is controlled at 5~20 m / min; and / or In S3, the process conditions for hot pressing or winding are: hot pressing temperature 80~120℃, hot pressing pressure 5~15 MPa, hot pressing time 5~15 s; the hot pressing equipment is a flatbed hot press or a multi-roller hot press unit; and / or In S4, the curing treatment is carried out under ambient temperature of 20~30℃ and relative humidity of 40%~70%, and the curing time is 12~72 hours; and / or As a preferred technical solution In S2, the surface of the laminate near the nonwoven fabric layer is first activated by atomized spraying with an aqueous solution containing fatty alcohol polyoxyethylene ether surfactant before lamination. The fatty alcohol polyoxyethylene ether surfactant has a mass concentration of 0.5% to 2.0% in the solution, the droplet size of the atomized spray is controlled at 50 to 150 μm, and the spraying amount is 1 to 5 g / m³.2 ; After spraying, the surface is dried with hot air at 40-60°C for 5-15 seconds to evaporate the moisture and volatile components in the surfactant, forming an activated interface on the surface of the adhesive layer.

[0015] Thirdly, the application of sheets with any of the above-mentioned technical features in the packaging of daily chemical products, wherein the daily chemical products include at least one of the following: toothpaste tubes, facial cleanser tubes, hand cream tubes, face cream tubes, lotion tubes, serum tubes, sunscreen tubes, shampoo bottles, shower gel bottles, hand sanitizer bottles, laundry detergent bags, fabric softener packaging, cosmetic tubes, ointment tubes, hair dye tubes, personal care product tubes, household cleaner packaging, pet product tubes, and oral care product packaging.

[0016] The advantages and beneficial effects of this invention are as follows: a composite fiber meltblown fabric with a core-sheath structure is selected, with polyethylene as the sheath and polypropylene as the core. The outer PE sheath and the PE-based adhesive layer have good thermal affinity, ensuring the interfacial bonding strength. The inner PP core layer gives the nonwoven fabric sufficient tensile strength and stiffness, overcoming the defects of poor tensile performance and easy breakage in tube forming of pure PE meltblown fabric.

[0017] This invention improves the peel strength between the nonwoven fabric layer and the polymer layer by using an adhesive layer, a barrier layer, and a support layer, and by applying corona treatment and activation to key interfaces, thereby avoiding the problem of traditional tactile varnishes easily falling off.

[0018] Furthermore, the sheet material shown in this invention provides a stable tactile feel by relying on the nonwoven fabric's own fiber structure, eliminating multiple processes such as primer coating, printing, varnish application, and curing in traditional processes. This not only simplifies the process and reduces equipment investment and energy consumption but also avoids common industry problems such as uneven coating thickness, rough feel, and VOC emissions. While maintaining good barrier properties, stiffness, and heat-sealing performance, the sheet material also possesses reliable molding adaptability and cost advantages. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the sheet material shown in this invention.

[0020] Figure label: 1-Non-woven fabric layer, 101-Sheet layer, 102-Core layer, 2-Adhesive layer, 3-Barrier layer, 4-Support layer. Detailed Implementation

[0021] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, it should be noted that, for ease of description, only the parts relevant to this application are shown in the accompanying drawings, not the entire structure. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0022] The terms “comprising” and “having”, and any variations thereof, used in this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus.

[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly or implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] This disclosure provides a nonwoven fabric tactile sheet, characterized in that it comprises a nonwoven fabric layer 1, an adhesive layer 2, a barrier layer 3, and a support layer 4, which are sequentially stacked by adhesive layers. The adhesive layer comprises a polyethylene material, the barrier layer comprises an ethylene-vinyl alcohol copolymer, and the support layer comprises a polyethylene material. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure, wherein the composite fiber comprises a sheath layer 101 and a core layer 102, the sheath layer comprises a polyethylene material, and the core layer comprises a polypropylene material.

[0025] The nonwoven tactile sheet disclosed herein primarily addresses the problems of complex processes, easy coating peeling, and uneven feel in the production of tactile surfaces using traditional sheet tubes. This disclosure uses a core-sheath structured composite fiber meltblown fabric as the tactile functional layer, with a polyethylene (PE) sheath and a polypropylene (PP) core. The outer PE sheath and the PE-based adhesive layer share molecular chain segment similarity and thermal affinity. Under the thermal action of the composite process, the molecular chain segments at the interface between the two can diffuse and entangle, forming a physical bond, thereby ensuring excellent interfacial bonding strength between the nonwoven layer and the polymer matrix.

[0026] In the nonwoven fabric layer, the inner PP core layer provides the necessary tensile strength and stiffness due to its high crystallinity and modulus. This soft-outer-rigid-inner-core structure overcomes the defect of pure PE meltblown fabric being prone to breakage during subsequent tube forming due to insufficient strength, and also avoids the problem of weak bonding between pure PP fibers and PE-based adhesive layers, achieving a balance between tactile feel, bonding strength, and molding adaptability.

[0027] Furthermore, by setting up specialized barrier and support layers, this disclosure enables the sheet material to achieve a unique and stable tactile feel while maintaining excellent barrier properties, stiffness, and heat-sealing performance, thus providing a foundation for the application of sheet tubes in high-end packaging fields such as daily chemicals and cosmetics.

[0028] In some embodiments, to control the tactile feel, softness, and thermal bonding behavior with the adhesive layer, the basis weight of the nonwoven layer is controlled between 30 and 60 gsm. Too low a basis weight results in an excessively thin nonwoven layer, which not only feels flimsy but is also prone to breakage or deformation during lamination and subsequent processing due to insufficient strength. Too high a basis weight makes the sheet overall stiff and dull to the touch; furthermore, an excessively thick fiber layer may affect the heat transfer efficiency between it and the underlying polymer melt, leading to insufficient interfacial bonding.

[0029] Furthermore, the mass ratio of the skin layer to the core layer is controlled between 3:7 and 7:3. If the skin layer ratio is too high, although the thermal adhesion with the PE adhesive layer will be stronger, the reinforcing effect provided by the PP core layer is weakened, and the overall stiffness of the nonwoven fabric decreases. Conversely, if the core layer ratio is too high, the PE skin layer content will be insufficient, which may lead to a decrease in the interfacial bonding force with the adhesive layer. Simultaneously, to ensure that the skin layer material can preferentially melt and flow during lamination to form a good interface, the melt index of the skin layer material is required to be greater than that of the core layer material.

[0030] Specifically, the melt index of the polyethylene skin layer is preferably 1.6~2.4 g / 10min under the conditions of 190℃ / 2.16kg; the melt index of the polypropylene core layer is preferably 1.4~2.2 g / 10min under the same conditions. This difference in melt index manifests in the composite thermal field as follows: the PE skin layer softens and melts earlier and more fully than the PP core layer, thus better penetrating and interlocking with the adhesive layer melt under pressure, while the PP core layer maintains a relatively intact fiber morphology to maintain strength.

[0031] In some embodiments, to improve the surface smoothness, internal pore structure, and the uniformity and durability of the final tactile feel of the nonwoven fabric layer, the sheath and core layers of the composite fibers in the nonwoven fabric layer have an eccentric wrapping structure, with the sheath covering the core layer at a rate controlled between 60% and 95%. The wrapping rate refers to the percentage of the core layer cross-sectional area covered by the sheath material. Too low a wrapping rate means a large area of ​​the PP core layer is directly exposed, forming hard nodes on the fiber surface. This can lead to a rough tactile feel and become a weak point in the interfacial bonding due to the poor compatibility between PP and PE adhesive layers. Too high a wrapping rate is difficult to achieve in terms of process and increases costs significantly. The eccentric wrapping structure of this disclosure, within the range of 60% to 95%, ensures that the vast majority of the fiber surface is made of easily bonded PE material, while providing additional inter-fiber anchoring through controllable exposed PP points, which is beneficial to improving the strength of the nonwoven fabric itself.

[0032] Furthermore, the fineness of the composite fiber is controlled between 1.5 and 3.5 dtex, and the monofilament strength is required to be ≥2.5 cN / dtex. Fineness reflects the thickness of a single fiber; moderate fineness is beneficial for forming a fiber web that is neither too sparse nor too dense, providing suitable micro-undulations for the tactile feel. Monofilament strength reflects the fiber's resistance to breakage; high strength is used to improve the durability of the nonwoven fabric in subsequent processing. The porosity of the nonwoven fabric layer is controlled between 40% and 70%, and the average pore size is controlled between 5 and 25 μm.

[0033] Porosity and average pore size together define the tactile feel and pressure elasticity of nonwoven fabrics. Too low a porosity or too small a pore size results in a stiff, matte feel; too high a porosity or too large a pore size results in a loose, lacking texture. When touched by fingers, the fiber web undergoes a delicate, uniform elastic deformation, thus delivering a stable and comfortable matte feel.

[0034] In some embodiments, to enhance the surface polarity of the nonwoven layer and increase its chemical affinity and physical intercalation with the subsequent polymer adhesive layer, the surface of the nonwoven layer is subjected to corona treatment. Corona treatment is a surface modification technique that uses high-frequency, high-voltage ionization of air to generate active particles (such as ozone, oxygen free radicals, etc.) on the material surface, thereby initiating oxidation. The power of the corona treatment is 100~500 W, the treatment speed is 5~20 m / min, and the electrode gap is 1.0~2.5 mm. If too few oxygen-containing polar groups are introduced to the surface, the modification effect will be insignificant; if the power is too high or the speed is too slow, it may cause excessive oxidation of the surface or even fiber breakdown, damaging the strength of the nonwoven fabric. The electrode gap affects the uniformity and stability of the electric field, and thus the uniformity of the treatment.

[0035] In some embodiments, the adhesive layer comprises a blend of low-density polyethylene (LDPE) and medium-density polyethylene (MDPE); the barrier layer comprises a blend of ethylene-vinyl alcohol copolymer (EVOH) and polyethylene (PE); and the support layer comprises a mixture of high-density polyethylene (HDPE), low-density polyethylene (LDPE), and color masterbatch. The adhesive layer, using an LDPE / MDPE blend, combines the good flexibility and heat-sealing properties of LDPE with the high strength and stiffness of MDPE, allowing for good flow and spreading during lamination while providing sufficient support. The barrier layer is primarily composed of EVOH, but it has poor processability and is prone to moisture absorption. Blending it with PE and employing a multi-layer co-extrusion structure effectively protects the EVOH layer while utilizing PE to provide heat-sealing properties and mechanical support. The support layer uses an HDPE / LDPE blend, where HDPE provides high rigidity and strength, LDPE improves processing flowability and impact resistance, and the color masterbatch provides the desired color.

[0036] Furthermore, in some embodiments, the adhesive layer comprises, by weight percentage: 75%–85% LDPE with a melt index of 6.5–7.5 g / 10 min (190°C / 2.16 kg) and 15%–25% MDPE with a melt index of 3.5–4.5 g / 10 min (190°C / 2.16 kg). The adhesive layer melt has moderate fluidity and melt strength, which allows it to fully impregnate the pores of the nonwoven fabric during lamination without excessive flow.

[0037] Furthermore, in some embodiments, the barrier layer comprises, by weight percentage: 18%~25% HDPE, 62%~75% LDPE, and 5%~15% EVOH. The HDPE / LDPE blend matrix within the scope of this disclosure provides a good dispersion environment and mechanical support for EVOH.

[0038] Furthermore, in some embodiments, the support layer comprises, by weight percentage: 37%~43% HDPE, 47%~53% LDPE, and 7%~13% color masterbatch.

[0039] In some specific embodiments, functional additives are also introduced into each layer. The adhesive layer further includes, by weight percentage: 3%~6% maleic anhydride-grafted polyethylene (PE-g-MAH). PE-g-MAH, as a reactive compatibilizer, has anhydride groups that can chemically react with the small amount of polar groups such as hydroxyl groups that may be generated on the surface of the nonwoven fabric after corona treatment, forming stronger chemical bonds. This elevates the interfacial bonding from primarily physical bonding to a synergistic physical-chemical bonding, improving peel strength and preventing the tactile layer from detaching under long-term use or friction. The barrier layer further includes, by weight percentage: 1%~5% polyamide compatibilizer. This compatibilizer improves the interfacial adhesion between the EVOH and PE phases, reduces phase separation, and makes the barrier layer structure more uniform and its barrier performance more stable. The support layer further includes, by weight percentage: 2%~5% ultra-high molecular weight polyethylene (UHMWPE), improving the abrasion resistance, tear resistance, and toughness of the support layer, making the sheet more durable during pipe manufacturing, filling, and transportation.

[0040] This disclosure also provides a method for preparing the above-mentioned nonwoven tactile sheet, including the following steps: S1. Provides a non-woven fabric layer and a laminate comprising an adhesive layer, a barrier layer, an adhesive layer, and a support layer in sequence; S2. The nonwoven fabric layer and the laminate are bonded together as one unit through an adhesive layer on the outer surface of the laminate. S3. Perform hot pressing or winding on the composite structure; S4. Perform a curing treatment on the structure after hot pressing or winding.

[0041] In some embodiments, S1, in the laminate, the adhesive layer has a thickness of 15-25 μm, the barrier layer has a thickness of 100-140 μm, and the support layer has a thickness of 90-110 μm. An adhesive layer that is too thin may result in insufficient adhesion, while one that is too thick may damage the nonwoven fabric structure or affect the feel due to excessive heating; the thicknesses of the barrier and support layers need to balance performance and cost.

[0042] Specifically, in S1, the laminate can be prepared by a co-extrusion process. The adhesive layer, barrier layer, and support layer are melted and plasticized by independent extruders and then conveyed to the co-extrusion die for lamination in a preset order. The die temperature is controlled at 180~320℃, and the extruder screw speed is 20~80 rpm. The die temperature is crucial to ensuring that the melt layers have suitable viscosity when they merge, enabling good lamination without turbulence. Too low a temperature will result in high melt viscosity, poor interlayer adhesion, and easy defects; too high a temperature may cause polymer degradation, especially for heat-sensitive EVOH. The screw speed affects the production capacity and melt plasticization uniformity. After extrusion through the die outlet, each melt layer is drawn and cooled by cooling rollers to form a laminate with uniform thickness. The temperature and speed of the cooling rollers are crucial for eliminating internal stress and obtaining a flat sheet. The nonwoven fabric layer and the laminate can be bonded together by hot pressing or hot roller bonding. The bonding linear pressure is 30~80 N / cm, and the bonding speed is controlled at 5~20 m / min. Appropriate pressure ensures tight contact at the interface, while speed affects the heat treatment time and needs to be matched with the temperature.

[0043] Correspondingly, in S2, the laminate and the nonwoven fabric layer can also be achieved through two extrusion composites. In the first composite, a semi-finished laminate of support layer / first adhesive layer / adhesive layer / barrier layer is prepared first; in the second composite, this semi-finished product is then composited with the nonwoven fabric layer by extruding the second adhesive layer. This stepwise composite allows for independent optimization of the process conditions at the two composite interfaces; for example, the first composite can focus on achieving perfect fusion between polymer layers and protection of the barrier layer, and can use a higher temperature; while the second composite, facing the heat-sensitive nonwoven fabric, requires more precise temperature control (e.g., 100~140℃) to avoid heat damage to the fibers.

[0044] In some embodiments, in step S3, the hot-pressing temperature is 80~120℃, the hot-pressing pressure is 5~15 MPa, and the hot-pressing time is 5~15 s; the hot-pressing equipment is a flatbed hot press or a multi-roller hot press unit. This step is not simply compaction, but rather, through precise control of temperature and pressure, it allows the adhesive layer resin to flow and redistribute more fully in the gaps between the nonwoven fabric fibers, while simultaneously promoting the relaxation and rearrangement of molecular chains at the interface, thereby further consolidating the interfacial bond, eliminating residual stress inside the composite material, and improving dimensional stability. Insufficient temperature or pressure will have limited effect; excessively high temperature or excessive time may crush the pore structure of the nonwoven fabric and impair the tactile feel.

[0045] In some embodiments, in step S4, the curing treatment is carried out at an ambient temperature of 20-30°C and a relative humidity of 40%-70%, for a curing time of 12-72 hours. Curing is a process that allows the internal structure of the material to reach a state of thermodynamic equilibrium over time. For the multilayer composite material of this disclosure, the polymer layers may exhibit incomplete crystallization or internal stress after rapid cooling. Static curing under suitable temperature and humidity conditions allows for slow relaxation and secondary crystallization of the molecular chain segments, which stabilizes the material's dimensions, modulus, heat-sealing properties, etc., and may slightly increase the interfacial bonding strength as the molecular chains further interpenetrate.

[0046] In some embodiments, for the composite interface between the laminate and the nonwoven layer, in order to further activate the surface of the adhesive layer and improve its wetting and adhesion ability to the nonwoven fibers, in step S2, the surface of the laminate near the nonwoven layer (i.e., the exposed adhesive layer) is first activated by atomization spraying with an aqueous solution containing a fatty alcohol polyoxyethylene ether surfactant before lamination. The mass concentration of the fatty alcohol polyoxyethylene ether surfactant in the solution is 0.5%~2.0%, the droplet size of the atomized spray is controlled at 50~150 μm, and the spraying amount is 1~5 g / m². 2 After spraying, the surface is dried with hot air at 40-60°C for 5-15 seconds to evaporate the moisture and volatile components in the surfactant, forming an activated interface on the surface of the adhesive layer.

[0047] After drying, surfactant molecules form a very thin molecular layer rich in hydrophilic ether bonds on the surface of the PE adhesive layer. This molecular layer is amphiphilic, with its hydrophobic tail end compatible with the PE surface and its hydrophilic head end facing outward. When the heated adhesive layer melt comes into contact with the nonwoven fabric, this activated interface can, on the one hand, slightly reduce the surface tension of the PE melt, improving its spreading and penetration in the high specific surface area nonwoven fiber network; on the other hand, its hydrophilic groups may generate additional polar interactions with the corona-treated nonwoven fiber surface.

[0048] The nonwoven fabric tactile sheet disclosed herein provides a stable and uniform tactile feel by relying on the finely controlled microstructure of the nonwoven fabric itself. This completely eliminates the need for multiple energy-intensive and VOC-emitting processes in traditional manufacturing, such as primer coating, printing, application of special tactile varnish, and UV curing. This significantly simplifies the production process, reduces equipment investment and overall costs, and avoids industry problems such as rough tactile feel and insufficient varnish adhesion leading to easy peeling caused by uneven coating thickness. While maintaining good barrier properties, stiffness, and heat-sealing performance, the sheet also possesses reliable molding adaptability and cost advantages, making it ideal for applications in the daily chemical, cosmetic, and pharmaceutical industries, where the requirements for packaging quality and user experience are increasingly demanding.

[0049] This disclosure also provides the application of the aforementioned nonwoven fabric tactile sheet in the packaging of daily chemical products, including but not limited to at least one of the following: toothpaste tubes, facial cleanser tubes, hand cream tubes, face cream tubes, lotion tubes, serum tubes, sunscreen tubes, shampoo bottles, shower gel bottles, hand sanitizer bottles, laundry detergent bags, fabric softener packaging, cosmetic tubes, ointment tubes, hair dye tubes, personal care product tubes, household cleaner packaging, pet product tubes, and oral care product packaging. The unique matte, delicate tactile feel provided by this sheet directly enhances the appearance and user grip experience of the packaging, meeting the growing market demand for high-end packaging.

[0050] The present invention will be described more clearly and completely below with reference to specific embodiments.

[0051] Example 1 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, including the following steps: S1. Provide a nonwoven fabric layer and a laminate. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure, wherein the composite fiber includes a sheath layer and a core layer, the sheath layer is PE, and the core layer is PP.

[0052] The laminated body comprises, in sequence, an adhesive layer, a barrier layer, an adhesive layer, and a support layer; the adhesive layer is a PE material, the barrier layer is EVOH, and the support layer is a PE material.

[0053] S2. The nonwoven fabric layer and the laminate are bonded together by a hot roller under the conditions of a composite temperature of 110°C, a composite linear pressure of 50 N / cm, and a composite speed of 12 m / min, through an adhesive layer on the outer surface of the laminate.

[0054] S3. The composite structure is subjected to hot pressing treatment under the conditions of hot pressing temperature of 90℃, hot pressing pressure of 10 MPa, and hot pressing time of 10 s.

[0055] S4. The hot-pressed structure is cured for 36 hours at an ambient temperature of 25°C and a relative humidity of 55% to obtain a non-woven fabric tactile sheet.

[0056] The sheet prepared in this embodiment has a delicate and uniform feel, and the peel strength between the nonwoven layer and the polymer layer is 4.8 N / 15mm.

[0057] Example 2 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, including the following steps: S1. Provide a nonwoven fabric layer and a laminate. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure, a basis weight of 35 gsm, a core-sheath mass ratio of 4:6, a PE melt index of 1.8 g / 10min (190℃ / 2.16kg) for the sheath layer, and a PP melt index of 1.6 g / 10min (190℃ / 2.16kg) for the core layer.

[0058] The laminate comprises, in sequence, an adhesive layer, a barrier layer, an adhesive layer, and a support layer; the adhesive layer is a blend of LDPE and MDPE; the barrier layer is a blend of EVOH and PE; and the support layer is a mixture of HDPE, LDPE, and color masterbatch.

[0059] In the laminate, the adhesive layer has a thickness of 18 μm, the barrier layer has a thickness of 105 μm, and the support layer has a thickness of 95 μm.

[0060] The laminate is prepared by co-extrusion: the adhesive layer, barrier layer and support layer are melted and plasticized by independent extruders, and then conveyed to a co-extrusion die with a die temperature of 200°C for sequential stacking and compounding. The screw speed is 35 rpm. After extrusion through the die, the laminate is cooled and shaped by cooling rollers.

[0061] S2. The nonwoven fabric layer and the laminate are bonded together by hot pressing through the adhesive layer on the outer surface of the laminate at a composite temperature of 120°C, a composite linear pressure of 40 N / cm, and a composite speed of 8 m / min.

[0062] S3. The composite structure is subjected to hot pressing treatment under the conditions of hot pressing temperature of 100℃, hot pressing pressure of 8 MPa, and hot pressing time of 8 s.

[0063] S4. The hot-pressed structure is cured for 48 hours at an ambient temperature of 22℃ and a relative humidity of 60% to obtain a non-woven fabric tactile sheet.

[0064] The sheet prepared in this embodiment has a soft and delicate feel, and the peel strength between the nonwoven layer and the polymer layer is 4.5 N / 15mm.

[0065] Example 3 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, including the following steps: S1. Provide a nonwoven fabric layer and a laminate. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure, a basis weight of 55 gsm, a mass ratio of the sheath to the core layer of 6:4, a PE melt index of 2.2 g / 10min for the sheath layer, and a PP melt index of 2.0 g / 10min for the core layer.

[0066] The composite fiber sheath and core layers have an eccentric covering structure, with a sheath coverage of 70%, a fineness of 2.0 dtex, and a single filament strength of 2.8 cN / dtex. The nonwoven fabric layer has a porosity of 55% and an average pore size of 15 μm. The surface of the nonwoven fabric layer is corona treated with a corona power of 300 W, a treatment speed of 12 m / min, and an electrode gap of 1.8 mm.

[0067] The laminate comprises, in sequence, an adhesive layer, a barrier layer, an adhesive layer, and a support layer; the adhesive layer is a blend of LDPE and MDPE; the barrier layer is a blend of EVOH and PE; and the support layer is a mixture of HDPE, LDPE, and color masterbatch.

[0068] In the laminate, the adhesive layer has a thickness of 22 μm, the barrier layer has a thickness of 130 μm, and the support layer has a thickness of 105 μm.

[0069] The laminate is prepared by a co-extrusion process: the die temperature is 250°C and the screw speed is 60 rpm.

[0070] S2. The nonwoven fabric layer and the laminate are bonded together by a hot roller under the conditions of a composite temperature of 130°C, a composite linear pressure of 70 N / cm, and a composite speed of 18 m / min, through an adhesive layer on the outer surface of the laminate.

[0071] S3. The composite structure is wound up.

[0072] S4. The wound structure is cured for 24 hours at an ambient temperature of 28℃ and a relative humidity of 50% to obtain a non-woven fabric tactile sheet.

[0073] The sheet prepared in this embodiment has a full and elastic feel, and the peel strength between the nonwoven layer and the polymer layer is 4.9 N / 15mm.

[0074] Example 4 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, including the following steps: S1. Provide a nonwoven fabric layer and a laminate. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure, a basis weight of 40 gsm, a core-sheath mass ratio of 3:7, a PE melt index of 1.6 g / 10min for the sheath layer, and a PP melt index of 1.4 g / 10min for the core layer.

[0075] The composite fiber sheath and core layers have an eccentric covering structure, with a sheath coverage of 60%, a fineness of 1.5 dtex, and a single filament strength of 2.5 cN / dtex. The nonwoven fabric layer has a porosity of 40% and an average pore size of 5 μm. The surface of the nonwoven fabric layer is corona treated with a corona power of 100 W, a treatment speed of 20 m / min, and an electrode gap of 2.5 mm.

[0076] The laminated body comprises, in sequence, an adhesive layer, a barrier layer, an adhesive layer, and a support layer; The adhesive layer comprises, by weight percentage: 75% LDPE with a melt index of 6.5 g / 10 min and 25% MDPE with a melt index of 3.5 g / 10 min.

[0077] The barrier layer comprises, by weight percentage: HDPE 18%, LDPE 75%, and EVOH 7%.

[0078] The support layer comprises, by weight percentage: 37% HDPE, 53% LDPE, and 10% masterbatch.

[0079] In the laminate, the adhesive layer has a thickness of 15 μm, the barrier layer has a thickness of 100 μm, and the support layer has a thickness of 90 μm.

[0080] The laminate is prepared by co-extrusion process: the die temperature is 180℃ and the screw speed is 20 rpm.

[0081] S2. The lamination of the nonwoven fabric layer and the laminate includes two extrusion lamination processes: In the first lamination, the support layer and the barrier layer are extruded and laminated through a first adhesive layer; in the second lamination, the semi-finished product obtained from the first lamination is extruded and laminated with the nonwoven fabric layer through a second adhesive layer, the composition of which is the same as that of the first adhesive layer. The lamination temperature is 100℃, the lamination linear pressure is 30 N / cm, and the lamination speed is 5 m / min.

[0082] S3. The composite structure is subjected to hot pressing treatment at a hot pressing temperature of 80℃, a hot pressing pressure of 5 MPa, and a hot pressing time of 15 s.

[0083] S4. The hot-pressed structure is cured for 72 hours at an ambient temperature of 20℃ and a relative humidity of 70% to obtain a non-woven fabric tactile sheet.

[0084] The sheet prepared in this embodiment has a dense and hard feel, and the peel strength between the nonwoven layer and the polymer layer is 5.2 N / 15mm.

[0085] Example 5 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, including the following steps: S1. Provide a nonwoven fabric layer and a laminate. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure, a basis weight of 50 gsm, a mass ratio of the sheath to the core layer of 5:5, a PE melt index of 2.0 g / 10min for the sheath layer, and a PP melt index of 1.8 g / 10min for the core layer.

[0086] The composite fiber sheath and core layers have an eccentric covering structure, with a sheath coverage of 80%, a fineness of 2.5 dtex, and a single filament strength of 3.0 cN / dtex. The nonwoven fabric layer has a porosity of 60% and an average pore size of 18 μm. The surface of the nonwoven fabric layer is corona treated with a corona power of 200 W, a treatment speed of 8 m / min, and an electrode gap of 1.5 mm.

[0087] The laminated body comprises, in sequence, an adhesive layer, a barrier layer, an adhesive layer, and a support layer; The adhesive layer comprises, by weight percentage: 80% LDPE with a melt index of 7.0 g / 10 min and 20% MDPE with a melt index of 4.0 g / 10 min.

[0088] The barrier layer comprises, by weight percentage: HDPE 22%, LDPE 68%, and EVOH 10%.

[0089] The support layer comprises, by weight percentage: 40% HDPE, 50% LDPE, and 10% masterbatch.

[0090] In the laminate, the adhesive layer has a thickness of 20 μm, the barrier layer has a thickness of 120 μm, and the support layer has a thickness of 100 μm.

[0091] The laminate is prepared by co-extrusion process: the die temperature is 220℃ and the screw speed is 50 rpm.

[0092] S2. The composite of the nonwoven fabric layer and the laminate includes two extrusion composite processes, the process being the same as in Example 4. The composite temperature is 120℃, the composite linear pressure is 55 N / cm, and the composite speed is 15 m / min.

[0093] S3. The composite structure is subjected to hot pressing treatment at a hot pressing temperature of 100℃, a hot pressing pressure of 12 MPa, and a hot pressing time of 8 s.

[0094] S4. The hot-pressed structure is cured for 48 hours at an ambient temperature of 25°C and a relative humidity of 55% to obtain a non-woven fabric tactile sheet.

[0095] The sheet prepared in this embodiment has a soft, velvety feel, and the peel strength between the nonwoven layer and the polymer layer is 5.2 N / 15mm.

[0096] Example 6 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, including the following steps: S1. Provide a nonwoven fabric layer and a laminate. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure, a basis weight of 60 gsm, a mass ratio of the sheath to the core layer of 7:3, a PE melt index of 2.4 g / 10min for the sheath layer, and a PP melt index of 2.2 g / 10min for the core layer.

[0097] The composite fiber sheath and core layers have an eccentric covering structure, with a sheath coverage rate of 95%, a fineness of 3.5 dtex, and a single filament strength of 3.2 cN / dtex. The nonwoven fabric layer has a porosity of 70% and an average pore size of 25 μm. The surface of the nonwoven fabric layer is corona treated with a corona power of 500 W, a treatment speed of 5 m / min, and an electrode gap of 1.0 mm.

[0098] The laminated body comprises, in sequence, an adhesive layer, a barrier layer, an adhesive layer, and a support layer; The adhesive layer comprises, by weight percentage: 85% LDPE with a melt index of 7.5 g / 10 min and 15% MDPE with a melt index of 4.5 g / 10 min.

[0099] The barrier layer comprises, by weight percentage: HDPE 25%, LDPE 62%, and EVOH 13%.

[0100] The support layer comprises, by weight percentage: 43% HDPE, 47% LDPE, and 10% masterbatch.

[0101] In the laminate, the adhesive layer has a thickness of 25 μm, the barrier layer has a thickness of 140 μm, and the support layer has a thickness of 110 μm.

[0102] The laminate is prepared by a co-extrusion process: the die temperature is 320℃ and the screw speed is 80 rpm.

[0103] S2. The lamination of the nonwoven fabric layer and the laminate includes two extrusion lamination processes, the same as in Example 4. The lamination temperature is 140℃, the lamination linear pressure is 80 N / cm, and the lamination speed is 20 m / min.

[0104] S3. The composite structure is subjected to hot pressing treatment at a hot pressing temperature of 120℃, a hot pressing pressure of 15 MPa, and a hot pressing time of 5 s.

[0105] S4. The hot-pressed structure is cured for 12 hours at an ambient temperature of 30℃ and a relative humidity of 40% to obtain a non-woven fabric tactile sheet.

[0106] The sheet prepared in this embodiment has a fluffy and soft feel, and the peel strength between the nonwoven layer and the polymer layer is 4.7 N / 15mm.

[0107] Example 7 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, the steps of which are basically the same as those in Embodiment 5, the difference being the composition of each layer of the laminate: The adhesive layer comprises, by weight percentage: 77% LDPE with a melt index of 7.0 g / 10min, 17% MDPE with a melt index of 4.0 g / 10min, and 6% maleic anhydride-grafted polyethylene (PE-g-MAH).

[0108] The barrier layer comprises, by weight percentage: HDPE 21%, LDPE 67%, EVOH 10%, and polyamide compatibilizer 2%.

[0109] The support layer comprises, by weight percentage: HDPE 39%, LDPE 49%, color masterbatch 10%, and ultra-high molecular weight polyethylene (UHMWPE) 2%.

[0110] The sheet prepared in this embodiment has a delicate feel and a strong bond, with a peel strength of 6.5 N / 15mm between the nonwoven layer and the polymer layer.

[0111] Example 8 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, the steps of which are basically the same as those in Embodiment 5, the difference being the composition of each layer of the laminate: The adhesive layer comprises, by weight percentage: 80% LDPE with a melt index of 7.0 g / 10min, 16% MDPE with a melt index of 4.0 g / 10min, and 4% maleic anhydride-grafted polyethylene (PE-g-MAH).

[0112] The barrier layer comprises, by weight percentage: HDPE 22%, LDPE 66%, EVOH 10%, and polyamide compatibilizer 2%.

[0113] The support layer comprises, by weight percentage: 40% HDPE, 47% LDPE, 10% masterbatch, and 3% ultra-high molecular weight polyethylene (UHMWPE).

[0114] The sheet prepared in this embodiment is soft to the touch and wear-resistant, with a peel strength of 5.8 N / 15 mm between the nonwoven layer and the polymer layer.

[0115] Example 9 This embodiment provides a method for preparing a nonwoven fabric tactile sheet, the steps of which are basically the same as those in Embodiment 5, except that: In S2, before the laminate is combined with the nonwoven fabric layer, the surface of the laminate near the nonwoven fabric layer is activated: a 1.0% (w / w) aqueous solution of a fatty alcohol polyoxyethylene ether surfactant is used for atomized spraying, with a droplet size of 100 μm and a spraying amount of 3 g / m³. 2After spraying, dry with hot air at 50°C for 10 seconds to form an activated interface.

[0116] The sheet prepared in this embodiment has a uniform feel, and the peel strength between the nonwoven layer and the polymer layer is 6.2 N / 15mm.

[0117] Comparative Example 1 This comparative example provides a method for preparing a sheet material, the steps of which are basically the same as those in Example 2, except that the nonwoven fabric layer is pure PE meltblown fabric with the same basis weight.

[0118] The prepared sheet material had a decent feel, but during the subsequent simulated tube forming process, cracks appeared in the non-woven fabric layer at the bends.

[0119] Comparative Example 2 This comparative example provides a method for preparing a sheet material, the steps of which are basically the same as those in Example 2, except that the mass ratio of the skin layer to the core layer in the nonwoven fabric layer is 8:2 (the skin layer ratio is too high).

[0120] The prepared sheet material is too soft to the touch, lacks stiffness, sags severely, and has poor dimensional stability after heat sealing.

[0121] Comparative Example 3 This comparative example provides a method for preparing a sheet material, the steps of which are basically the same as those in Example 5, except that: the surface of the nonwoven fabric layer is not corona treated, and PE-g-MAH is not added to the adhesive layer.

[0122] The initial feel of the prepared sheet was acceptable, but after 100 rubbing tests, localized fuzzing appeared on the surface, and the interlayer peel strength was only 2.1 N / 15mm.

[0123] Comparative Example 4 This comparative example provides a method for preparing a sheet material using a traditional process: on the surface of a common PE / EVOH / PE composite sheet material, a primer is applied, then printed, coated with a special tactile varnish, and then cured under ultraviolet light.

[0124] The resulting sheet material had an uneven surface texture, with some areas exhibiting a rough, grainy feel. After 50 bending tests, the varnish coating developed fine cracks and localized peeling.

[0125] The embodiments described above are merely illustrative of several implementations of this disclosure, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this disclosure, and these all fall within the protection scope of this invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A nonwoven fabric tactile sheet, characterized in that, It includes a non-woven fabric layer, a barrier layer, and a support layer that are stacked sequentially through an adhesive layer; The adhesive layer comprises a polyethylene material, the barrier layer comprises an ethylene-vinyl alcohol copolymer, and the support layer comprises a polyethylene material. The nonwoven fabric layer is a composite fiber meltblown fabric with a core-sheath structure. The composite fiber includes a sheath layer and a core layer. The sheath layer includes polyethylene materials, and the core layer includes polypropylene materials.

2. The nonwoven tactile sheet according to claim 1, characterized in that, The nonwoven fabric layer has a basis weight of 30-60 gsm, wherein the mass ratio of the skin layer to the core layer is 3:7-7:3; the melt flow index of the skin layer material is greater than that of the core layer material; and / or The outer layer polyethylene has a melt index of 1.6~2.4 g / 10 min at 190℃ / 2.16 kg; the core layer polypropylene has a melt index of 1.4~2.2 g / 10 min at 190℃ / 2.16 kg.

3. The nonwoven tactile sheet according to claim 2, characterized in that, The composite fiber in the nonwoven fabric layer has an eccentric wrapping structure between the sheath and the core layer, with the sheath covering the core layer at a rate of 60% to 95%. The fineness of the composite fiber is 1.5 to 3.5 dtex, and the monofilament strength is ≥2.5 cN / dtex. The porosity of the nonwoven fabric layer is 40% to 70%, and the average pore size is 5 to 25 μm.

4. The nonwoven tactile sheet according to claim 3, characterized in that, The surface of the nonwoven fabric layer is subjected to corona treatment; the power of the corona treatment is 100~500 W, the treatment speed is 5~20 m / min, and the electrode gap is 1.0~2.5 mm.

5. The nonwoven tactile sheet according to claim 3, characterized in that, The adhesive layer comprises a blend of low-density polyethylene and medium-density polyethylene; and / or The barrier layer comprises a blend of ethylene-vinyl alcohol copolymer and polyethylene; and / or The support layer comprises a mixture of high-density polyethylene, low-density polyethylene, and color masterbatch.

6. The nonwoven tactile sheet according to claim 5, characterized in that, The adhesive layer comprises, by weight percentage: 75%~85% low-density polyethylene with a melt index of 6.5~7.5g / 10min at 190℃ / 2.16kg, and 15%~25% medium-density polyethylene with a melt index of 3.5~4.5g / 10min at 190℃ / 2.16kg; and / or The barrier layer comprises, by weight percentage: 18%~25% high-density polyethylene, 62%~75% low-density polyethylene, and 5%~15% ethylene-vinyl alcohol copolymer; and / or The support layer comprises, by weight percentage: 37%~43% high-density polyethylene, 47%~53% low-density polyethylene, and 7%~13% color masterbatch.

7. The nonwoven tactile sheet according to claim 6, characterized in that, The adhesive layer further comprises, by weight percentage: 3% to 6% maleic anhydride-grafted polyethylene; and / or The barrier layer further comprises, by weight percentage: 1% to 5% polyamide compatibilizer; and / or The support layer also includes, by weight percentage: 2% to 5% ultra-high molecular weight polyethylene.

8. The method for preparing the nonwoven tactile sheet according to any one of claims 1-7, characterized in that, Includes the following steps: S1. Provides a non-woven fabric layer and a laminate comprising an adhesive layer, a barrier layer, an adhesive layer, and a support layer in sequence; S2. The nonwoven fabric layer and the laminate are bonded together as one unit through an adhesive layer on the outer surface of the laminate. S3. Perform hot pressing or winding on the composite structure; S4. Perform a curing treatment on the structure after hot pressing or winding.

9. The preparation method according to claim 8, characterized in that, In S1, the thickness of the adhesive layer in the laminate is 15~25 μm, the thickness of the barrier layer is 100~140 μm, and the thickness of the support layer is 90~110 μm; and / or In S1, the laminate is prepared by a co-extrusion process. The adhesive layer, barrier layer, and support layer are melted and plasticized by independent extruders and then conveyed to the co-extrusion die for lamination in a preset order. The die temperature is 180~320℃, and the extruder screw speed is 20~80 rpm. After each layer of melt is extruded through the die outlet, it is drawn and cooled by cooling rollers to form the laminate with uniform thickness; and / or In S2, the lamination of the nonwoven fabric layer with the laminate includes two extrusion lamination processes: in the first lamination, the support layer and the barrier layer are extruded and laminated through a first adhesive layer; in the second lamination, the semi-finished product obtained from the first lamination is extruded and laminated with the nonwoven fabric layer through a second adhesive layer; and / or In S2, the lamination method is hot-press lamination or hot-roll lamination, the lamination temperature is 100~140℃, the lamination linear pressure is 30~80N / cm, and the lamination speed is controlled at 5~20 m / min; and / or In S3, the process conditions for hot pressing or winding are: hot pressing temperature 80~120℃, hot pressing pressure 5~15 MPa, hot pressing time 5~15 s; the hot pressing equipment is a flatbed hot press or a multi-roller hot press unit; and / or In S4, the curing treatment is carried out under the conditions of ambient temperature of 20~30℃ and relative humidity of 40%~70%, and the curing time is 12~72 hours.

10. The application of the nonwoven tactile sheet according to any one of claims 1-7 in the packaging of daily chemical products, including at least one of toothpaste tubes, facial cleanser tubes, hand cream tubes, face cream tubes, lotion tubes, serum tubes, sunscreen tubes, shampoo bottles, shower gel bottles, hand sanitizer bottles, laundry detergent bags, fabric softener packaging, cosmetic tubes, ointment tubes, hair dye tubes, personal care product tubes, household cleaner packaging, pet product tubes, and oral care product packaging.

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