43results about How to "Heat sealable" patented technology

A multilayer heat-sealable chlorine-free film of relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of polyester resin and at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of said odor barrier layer, composed of a homopolymer of ethylene or a copolymer of ethylene and an alpha-olefin or an ester-containing monomer. In a preferred embodiment, the odor barrier layer is formed of polyethylene terephthalate and adhesive tie layers are interposed between the odor barrier layer and the skin layers, resulting in a multilayer film of five layers. Pouches formed of such multilayer films are also disclosed.

A multilayer heat-sealable chlorine-free film of relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film includes an odor barrier layer and at least one directly adjoining heat-sealable skin layer. The barrier layer is composed of either an aliphatic or partially aromatic polyamide resin, or a blend thereof, blended with an ionomer resin consisting essentially of a partially neutralized ethylene-methacrylic acid copolymer, and the heat-sealable skin layer or layers bonded directly to the barrier layer are composed of copolymers of ethylene and an ester-containing comonomer. High resistance to delamination of the barrier layer and skin layer(s) is achieved without tie layers therebetween. Pouches formed of such multilayer chlorine-free films are also disclosed.

A multilayer heat-sealable chlorine-free odor barrier film having relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of an amorphous polyamide resin blended with an anhydride-modified olefinic polymer or copolymer. The film also includes at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of said odor barrier layer, composed of an ethylene polymer or copolymer. Pouches formed of such multilayer films are also disclosed.

The invention relates to a novel coated film and the producing method thereof. And it is a VMPET coated film, produced by coating PVDC, PVOH and AC as main raw materials on VMPET.

A multilayer heat-sealable chlorine-free odor barrier film having relatively low modulus, high interlaminar strength, and low noise upon flexing is provided. The film comprises an odor barrier layer of an amorphous polyamide resin blended with an anhydride-modified olefinic polymer or copolymer. The film also includes at least one heat-sealable skin layer, preferably two such skin layers on opposite sides of said odor barrier layer, composed of an ethylene polymer or copolymer, and an adhesive tie layer between each skin layer and the odor barrier layer. Pouches formed of such multilayer films are also disclosed.

The invention relates to an anti-ultraviolet bidirectional stretching polyester film and a preparation method thereof. The an anti-ultraviolet bidirectional stretching polyester film is composed of anupper surface layer, a core layer, and a lower surface layer. The core layer is composed of an anti-ultraviolet absorbent and polyethylene glycol terephthalate slice; the upper surface layer is composed of the anti-ultraviolet absorbent, an anti-adhesion agent, and the polyethylene glycol terephthalate slice; and the lower surface layer is composed of the anti-adhesion agent and the modified polyethylene glycol terephthalate slice. The product has the characteristics of UV resistance, heat sealing, high intensity, hydrolysis resistance, corrosion resistance, and high thermostability, can be widely used in the fields of outdoor product package and building, and belongs to the functional film, performance is outstanding, cost is low, and the method has a wide application prospect.

The invention relates to a waterproof and oilproof agent as well as a preparation method and application thereof. The waterproof and oilproof agent is prepared from the following components in percentage by weight: 30%-50% of styrene acrylic polymer, 5%-10% of beeswax emulsion, 2.5%-4.5% of polyvinyl alcohol, 2%-5.5% of modified starch, 0.5%-2% of plasticizer and 28%-60% of deionized water. The waterproof and oilproof agent is good in film-forming property; beeswax emulsion in a formed coating and the styrene-acrylic acid polymer are combined to form a hydrophobic and oleophobic surface layer;meanwhile, the hydrophobic and oleophobic surface layer is compounded with the modified starch, so that the waterproof and oilproof effects of the waterproof and oilproof coating on food-grade raw paper are obviously improved; the waterproof and oilproof properties of the waterproof and oilproof agent are extremely good; the waterproof and oilproof agent can completely replace traditional waxing,silicon coating and laminating processes; and the paper can directly enter a papermaking pulping system to be recycled when being recycled, the pollution of the laminated paper to the environment isreduced; and therefore, the waterproof and oilproof agent is an environment-friendly material.

The invention discloses an alcohol antistaling agent wrapping paper aiming to provide the alcohol antistaling agent wrapping paper which has stable alcohol volatilizezing speed, is not lead or penetrate and has low cost and a preparation method thereof. The wrapping paper is formed by jointing a base paper layer on the surface layer and a plastic film layer, wherein, the plastic film layer is made of a material which has thermoplasticity and is selected from the polyolefine or the mixture of the polyolefine or a multipolymer, the plastic film layer is a microporous film formed by the microporous treatment in the manufacturing process, or is punching film which is formed by the direct blanching and pinprick processes in the manufacturing process.

The invention discloses an undrawn polyethylene film and a preparation method thereof, and relates to the technical field of packaging film materials. The preparation method comprises the following steps: performing heating plastification on different layers of prepared components and raw materials, extruding, preparing a laminated-structure material by using a T-shaped mold head, and performing later treatment, thereby obtaining the undrawn polyethylene film finally. The undrawn polyethylene film comprises five layers, namely, a thermal sealing layer, a first middle layer, an auxiliary layer, a second middle layer and a corona layer for plating an aluminum membrane in sequence. The undrawn polyethylene film disclosed by the invention is large in strength, low in air permeability, low in damp permeability, good in plated aluminum adhesion property and good in thermal sealing property.

The invention discloses a heat-sealable matte printed aluminized composite packaging film for cigarettes and a preparation method thereof. The composite packaging film comprises a printed matte film and an aluminized film which are laminated and processed by use of a binder or a hot melt adhesive, wherein the printed layer of the matte film can be laminated with the aluminized layer of the aluminized film to obtain the composite packaging film. The composite packaging film provided by the invention has the following advantages: a heat-sealable matte film is creatively proposed to be adopted asa printed packaging film; after inner printing of the inner surface of the matte film, the printed layer of the matte film is laminated with the surface of the aluminized layer of the aluminized film, so the problem of additional coating of a matting coating on the surface of a conventional cigarette packaging film is solved; meanwhile, the matted layer and the aluminized film have medium-and-low-temperature heat sealability, so a film can be packaged and bonded without the need of using a glue when a cigarette is subsequently packaged on a machine; and the composite packaging film provided by the invention realizes medium-and-low-temperature heat sealability and matte effects on the basis of guaranteeing conventional functions, effectively reduces energy consumption, is friendly to the environment, and has a matte metal texture.

The invention discloses a high-barrier-property multilayer-co-extrusion packaging film which includes a surface layer, an inner layer and a core layer, wherein the core layer includes a first core layer, a second core layer and a third core layer which are successively bonded to each other through adhesive layers. The thickness ratio of the three core layers is (1-3):(1-5):(1-4). The adhesive layers are also used for respectively bonding the first core layer with the surface layer and the third core layer with the inner layer. The first core layer is a polyamide layer, the second core layer is an ethylene-vinyl alcohol co-polymer layer and the third core layer is a polyvinylidene chloride layer. The third core layer includes a mixture composed of 98 wt% of polyvinylidene chloride and 2 wt% of a processing aid, wherein the polyvinylidene chloride is a vinylidene chloride-maleic anhydride co-polymer, is 150 DEG C in melt point and is 1.7 g/cm<3> in density, and the processing aid is epoxidized soybean oil. In the invention, a polyvinylidene chloride core layer which is single in the prior art is improved, wherein the core layer is formed by compositing three functional core layers including polyamide, the ethylene-vinyl alcohol co-polymer and the polyvinylidene chloride according to the certain thickness ratio, so that the packaging film can improve air-barrier property and is further reduced in production cost by 25-30%.

The invention discloses a PETG cast film and a preparation process thereof. The components of the substrate include: 98.0-99.3 wt% of PETG resin, 0.5-1.0 wt% of antioxidant, 0.1-0.5wt % of antistatic agent, and 0.1-0.5wt % of ultraviolet absorbent. The antioxidant is at least one of hindered phenols; the antistatic agent is at least one of ethoxylated alkyl amines; and the ultraviolet absorbent is 2-hydroxy-4-n-octyloxybenzophenone. The product is high in wetting tension and low in shrinkage rate and thickness deviation, the appearance defect is few, the heat seal and heat transfer function can be achieved, and the percent of pass is up to 90%, the requirements in the fields of cards, anti-counterfeiting films, packaging films, decorative films and the like can be met. The technological process is simple and feasible, industrial production is easy to realize, and the method has excellent industrial application value.

The invention discloses an alginate soft capsule. A capsule material comprises thermal reversible gel, and the alginate soft capsule is prepared by dissolving a monovalent alginate salt and the thermal reversible gel in water in parts by mass and treating obtained thermal reversible gel liquid through a dropping or pressing process of the soft capsule. Through the thermal reversible gel, the capsule material has heat sealability and condensation formability, and meanwhile, the capsule material has feasibility of further carrying out a cross-linking reaction with a thermal irreversible gel initiator; a thermal irreversible gel layer can be accurately regulated and controlled by accurately regulating and controlling the thermal irreversible gel initiator; as a protective layer, the thermal irreversible gel layer can achieve a disintegration effect of the soft capsule on different parts of a digestive tract; and the thermal reversible gel layer can realize wrapping forming and instant dissolution of contents of the soft capsule. The alginate soft capsule disclosed by the invention can be completed by adopting a dropping method or a pressing method in an existing gelatin soft capsule production process; and a preparation method is simple, the cost is low, new process equipment does not need to be added, and quite high practicability and wide applicability are achieved.

The invention discloses a scratch-resistant degradable licence card base material and a preparation technology thereof. The base material comprises an upper layer and a lower layer. The upper layer comprises 92.8-97.8wt% of PMMA resin, 2-5wt% of a plasticizer, 0.1-0.7wt% of a lubricant, 0.1-0.5wt% of an anti-oxidant, 0-0.5wt% of an ultraviolet ray absorber and 0-0.5wt% of an antistatic agent. The lower layer comprises 90.1-94.4wt% of PHA resin, 5-8wt% of a plasticizer, 0.4-0.8wt% of a lubricant, 0.2-0.6wt% of an anti-oxidant and 0-0.5wt% of an antistatic agent. The base material has good scratch resistance, high light transmittance and good heat dimensional stability and can be used for heat seal card preparation. The preparation technology has simple and easy processes and can be industrialized easily. The base material has excellent industrial application value.

The embodiments of the present invention relate to multilayer thermoplastic structures having improved sealability and tearability. More specifically, the present invention relates to a multilayer heat sealant structure having at least three layers that may be coextrusion coated or otherwise laminated to a substrate, such as metallized polymeric material, foil, or other substrates.

The invention relates to a biaxially-oriented BOPE film and a preparation method thereof. The biaxially-oriented BOPE film comprises a surface layer I, a core layer and a surface layer II, wherein thecore layer is located between the surface layer I and the surface layer II; the surface layer I is composed of a heat sealing material and an anti-sticking agent; the surface layer II is composed ofpolyethylene and an anti-sticking agent; and the core layer is made of polyethylene and an antistatic agent. Raw materials for the three layers are respectively subjected to extrusion, strip casting,longitudinal stretching, transverse stretching, traction, corona treatment and rolling after melt plastification so as to obtain a product, namely the biaxially-oriented BOPE film. According to the film, the novel heat-sealing material is used on the surface layer I, so the heat-sealing temperature of the film is reduced to a very low temperature, the secondary composite processing of downstream customers is reduced, and wasting is reduced. According to a detection result, the product has heat sealing performance at 92 DEG C; the heat sealing strength of the film can reach 8.9 N/mm at 95 DEG C; and the film is very suitable for printing and compounding through corona treatment.

The invention discloses a waterproof and oil-proof agent. The waterproof and oil-proof agent comprises thermoplastic waterproof and oil-proof acrylic resin and thermoplastic reinforced acrylic resin, the thermoplastic waterproof and oil-proof acrylic resin contains a waterproof monomer and an oil-proof monomer; the waterproof monomer comprises an acrylate monomer and a styrene monomer; the oil-proof monomer is an acrylate monomer containing at least one of hydroxyl, amino and carboxyl; and the thermoplastic reinforced acrylic resin contains a self-crosslinking group. According to the waterproof and oil-proof agent, domestic acrylic resin is adopted, the cost is lower, two kinds of acrylic resin with different functions are adopted, the double-acrylic resin is scientifically compounded, a coating can be endowed with waterproof, oil-proof, temperature-resistant, non-sticky and peelable functions, when the waterproof and oil-proof agent is applied to paper-based packaging, a paper base can be re-pulped and recycled, and the adopted acrylic resin has heat sealability, so that the paper material of which the surface is coated with the waterproof and oil-proof agent can be directly heat-sealed and molded into various paper-based packages, and the paper material does not contain fluorine, and is non-toxic and odorless.

The invention provides an outer barrier bag flushing liquid bag which is constituted by a package and flushing liquid in the package. The package comprises a liquid medicine layer, a leakage observinglayer and a gas barrier layer, and is particularly and sequentially provided with PP resin serving as a thermal-bonding layer, POE resin serving as a diaphragm layer, POE resin serving as a strengthlayer, POE resin serving as a bonding layer, thermoplastic resin serving as a thermal-resisting layer, negative pressure gas serving as the leakage observing layer, PP resin serving as a thermal sticky layer, nylon resin serving as a reinforcing layer, and PET resin serving as a barrier layer. The integration of the outer barrier bag flushing liquid bag and the flushing liquid and the high barrierproperty to liquid are achieved; if the liquid medicine layer generates micro pores, the leakage observing layer can absorb the micro-leakage flushing liquid, and water spots are generated on the leakage observing layer, so that the micro-leakage flushing liquid is advantageously removed through quality testing; and the pass rate of factory finished products of the flushing liquid packing bag isincreased, the more guaranteed flushing liquid is provided for a medical unit, and the medication safety of patients is ensured.