A forming and surface treatment method of plateau characteristic material creative product

Abstract

The application discloses a forming and surface treatment method of plateau characteristic material creative product, which comprises the following steps: plateau characteristic base material preparation, packaging bag structure forming, traditional process surface pretreatment, cultural element engraving forming, environment-friendly sealing layer compounding and creative function integration. The plateau yak leather, highland barley straw, butter and other characteristic materials are deeply combined with the plateau traditional process and modern laser engraving technology, so that the yak jerky packaging bag is upgraded from the basic packaging to the creative product carrying the plateau culture, and the problem of single cultural expression of the traditional packaging bag is fundamentally solved. The application also protects the yak jerky packaging bag prepared by the method, and the yak jerky packaging bag has the properties of environmental protection, practicality and culture, can effectively improve the brand added value of the plateau characteristic product, and helps the cultural upgrading of the plateau food industry.

Description

Technical Field

[0001] This invention belongs to the field of food packaging technology, and in particular relates to a method for molding and surface treatment of cultural and creative products made of plateau-characteristic materials, specifically a method for preparing cultural and creative packaging bags using plateau yak jerky as a carrier. Background Technology

[0002] Yak jerky is a highly representative specialty food of the Qinghai-Tibet Plateau region. Its packaging, as the direct carrier of the product, not only fulfills the basic functions of protecting the product and extending its shelf life, but also serves as an important medium for conveying plateau culture and enhancing the product's added value. Traditional yak jerky packaging generally suffers from technical problems such as a lack of diverse cultural expression and insufficient integration with the regional characteristics of the plateau: existing packaging bags mostly use conventional materials such as ordinary kraft paper and composite plastics, merely printing simple yak patterns and plateau scenery for cultural labeling. They fail to deeply integrate plateau-specific materials and traditional craftsmanship with modern packaging technology, resulting in packaging bags that only fulfill basic packaging functions and cannot become cultural and creative products that embody plateau culture. This makes it difficult to meet consumers' cultural experience needs for food packaging and to fully realize the brand premium potential of plateau specialty products.

[0003] While some existing packaging technologies attempt to incorporate regional cultural elements, these efforts largely remain at the surface printing level. They fail to achieve cultural empowerment throughout the entire process, from material selection and structural design to surface treatment. Consequently, they cannot fundamentally solve the technical problem of the limited cultural expression in traditional yak jerky packaging bags, making it difficult to upgrade packaging products into cultural and creative products. Further improvements are needed. Summary of the Invention

[0004] To address the technical problems of traditional yak jerky packaging bags, such as their limited cultural expression and insufficient integration with the characteristics of the plateau region, the present invention aims to provide a molding and surface treatment method for cultural and creative products made from plateau-characteristic materials. By deeply integrating plateau-characteristic natural materials, traditional craftsmanship, and modern packaging molding and surface treatment technologies, the yak jerky packaging bag is upgraded from basic packaging to a cultural and creative product that carries plateau culture. This fundamentally solves the technical problem of the limited cultural expression of traditional packaging bags, while also improving the environmental friendliness, practicality, and cultural added value of the packaging.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solution:

[0006] A method for molding and surface treatment of cultural and creative products made from materials with plateau characteristics, wherein the cultural and creative product is a yak jerky packaging bag, includes the following steps:

[0007] Step S1, Preparation of plateau-characteristic substrate: Select native yak hide from the Qinghai-Tibet Plateau, and after hair removal, degreasing, tanning and softening treatment, mix it with plateau barley straw fiber and plateau ghee-modified natural resin in a mass ratio of 6:3:1, and prepare composite substrate by hot pressing and cold pressing.

[0008] Step S2, Packaging bag structure forming: The composite substrate is die-cut, creasing, folding and sewing to form a self-standing and self-sealing bag structure. A visual window is opened in the middle of the bag body, and a transparent protective strip made of plateau yak bone is inlaid at the window.

[0009] Step S3, Traditional process surface pretreatment: Using the traditional plateau ghee coating process, plateau ghee heated to 50-60℃ is evenly coated on the outer surface of the bag and left to stand for 24 hours to allow the ghee to penetrate into the substrate and form a natural protective layer.

[0010] Step S4, Cultural Elements Carving and Shaping: Using laser carving technology, plateau yak totems, Tibetan auspicious patterns, and the outline of the Qinghai-Tibet Plateau landform are carved on the surface of the bag. The carving depth is 0.1-0.3mm. After carving, the patterns are filled with natural mineral pigments from the plateau and fixed by low-temperature drying.

[0011] Step S5, environmentally friendly sealing layer lamination: An environmentally friendly sealing layer made of highland beeswax and natural resin is laminated onto the inner surface of the bag. The thickness of the sealing layer is 0.05-0.1mm, achieving food-grade sealing protection.

[0012] Step S6, integration of cultural and creative functions: Integrate a slow-release module of traditional Tibetan incense into the self-sealing strip of the bag, and set an unfoldable plateau culture instruction manual interlayer at the bottom of the bag to complete the preparation of the yak jerky cultural and creative packaging bag.

[0013] In a preferred embodiment of the present invention, in step S1, the yak hide is tanned using a traditional plateau plant tanning process, with plateau red willow bark and wolfsbane extract selected as tanning agents. The tanning time is 7-10 days, and the softness of the tanned hide is 3.5-4.5 mm, and the tear strength is ≥30 N / mm.

[0014] In a preferred embodiment of the present invention, in step S1, after the barley straw fiber is crushed, screened, treated with alkali and bleached, the fiber length is 1-3mm and the fiber diameter is 0.02-0.05mm. After being mixed with cowhide and modified resin, it is hot-pressed at 120-140℃ and 8-10MPa, and the cold pressing setting pressure is 5-6MPa, and the setting time is 2-3h.

[0015] In a preferred embodiment of the present invention, in step S2, the height of the self-standing self-sealing bag is 20-25cm, the width is 12-15cm, the bottom width is 4-6cm, the size of the visualization window is 8×5cm, the edge of the window is reinforced by hand sewing with plateau yak thread, and the yak bone protective strip is ground, polished, and disinfected, and then bonded to the bag body with natural resin.

[0016] In a preferred embodiment of the present invention, in step S3, the ghee is applied by hand brushing, with 2-3 brushings applied, and an interval of 4-6 hours between each brushing. The ambient temperature is 15-25℃ and the relative humidity is 40-60%. After penetration, excess ghee is removed by wiping with highland wool felt to form a uniform matte protective layer on the substrate surface.

[0017] In a preferred embodiment of the present invention, in step S4, the laser engraving is performed using a fiber laser engraving machine with an engraving power of 15-25W and an engraving speed of 300-500mm / s. The natural mineral pigments used for filling after engraving are plateau cinnabar, azurite, malachite, and ochre. 5-8% of natural resin is added to the pigments as a binder. The low-temperature drying temperature is 35-45℃, and the drying time is 12-18h.

[0018] In a preferred embodiment of the present invention, in step S5, the environmentally friendly sealing layer is made by mixing highland beeswax and natural resin in a mass ratio of 7:3 at a mixing temperature of 60-70℃. It is then coated onto the inner surface of the bag using a roller coating process. After coating, it is cured at a low temperature of 30-35℃ for 24 hours. The water vapor permeability of the sealing layer is ≤5g / (m²). 2 •24h) meets the safety standards for food contact materials.

[0019] In a preferred embodiment of the present invention, in step S6, the Tibetan incense slow-release module is made by grinding traditional Tibetan incense raw materials from the plateau into powder, encapsulating them in a breathable cotton bag, and embedding them inside a self-sealing strip. The Tibetan incense raw materials include plateau cypress, saffron, nard, and cloves, and the slow-release period is 3-6 months. The cultural instruction manual interlayer is made of the same composite substrate as the bag body, and the interlayer is printed with information on plateau yak meat culture and traditional Tibetan craftsmanship, which can be unfolded from the bottom of the bag body.

[0020] In a preferred embodiment of the present invention, step S7, finished product inspection and packaging, is also included: the prepared packaging bag is subjected to sealing test, food safety test, and cultural element integrity test. After passing the test, it is wrapped with traditional plateau cotton paper and packaged in a gift box printed with plateau cultural elements to complete the final preparation of the cultural and creative product.

[0021] A packaging bag for yak jerky is made using the molding and surface treatment methods of the above-mentioned plateau-characteristic materials and cultural and creative products. The packaging bag includes a composite substrate bag body, a visual window, a yak bone protective strip, cultural carving patterns, an environmentally friendly sealing layer, a Tibetan incense slow-release module, and a cultural instruction manual interlayer.

[0022] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0023] (1) Fundamentally solve the technical problem of the single cultural expression of traditional packaging bags: This invention deeply integrates plateau characteristic materials, traditional crafts and cultural elements from the entire process of substrate preparation, structural design, surface treatment and functional integration. Through three-dimensional carving, natural pigment filling and cultural and creative function integration, the packaging bag is upgraded from basic flat printing packaging to cultural and creative products that carry plateau culture, which completely solves the problem of the single cultural expression and insufficient integration of traditional packaging bags.

[0024] (2) Achieve deep integration of plateau culture and modern packaging technology: Select original and distinctive materials such as plateau yak hide, barley straw, ghee, and Tibetan incense, and adopt traditional plateau plant tanning, hand sewing, and ghee application techniques, combined with modern laser engraving and composite molding technology. This not only inherits the traditional plateau culture, but also improves the practicality and quality of the packaging, and achieves synergistic empowerment of culture and technology.

[0025] (3) Improve the environmental friendliness and safety of the product: All base materials are made of natural biodegradable materials from the plateau, replacing traditional plastic packaging, which is in line with the plateau ecological and environmental protection concept; the sealing layer is made of natural beeswax and resin, which meets the safety standards for food contact materials, ensuring the safety of yak jerky.

[0026] (4) Enhance product added value and brand competitiveness: Turning packaging bags into cultural and creative products not only enhances the product grade of yak jerky, but also endows the product with cultural value, which can effectively enhance the brand premium of the product and help the high-quality development of plateau specialty food industry.

[0027] (5) Combining practicality and cultural experience: The packaging bag not only fulfills the basic functions of food packaging such as sealing and preservation and self-standing display, but also provides consumers with an immersive plateau culture experience through designs such as slow release of Tibetan incense and cultural instruction manuals, thus satisfying consumers' emotional needs. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments or prior art, the drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A flowchart illustrating a method for molding and surface treatment of cultural and creative products made from plateau-characteristic materials, provided as an embodiment of the present invention.

[0030] Figure 2 This is a schematic diagram of the overall structure of a creative packaging bag for yak jerky provided in an embodiment of the present invention.

[0031] Figure 3 This is a schematic diagram of the composite substrate layer structure provided in an embodiment of the present invention.

[0032] Figure 4 This is a schematic diagram showing the storage location of the Tibetan incense slow-release module provided in an embodiment of the present invention. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] This invention uses natural materials with plateau characteristics as the base material, traditional plateau craftsmanship as the core, and modern molding and surface treatment technology as the support. It deeply integrates plateau cultural elements from four dimensions: base material preparation, structural molding, surface treatment, and functional integration, making the packaging bag itself a cultural and creative product that carries plateau culture. It fundamentally solves the technical problem of the single cultural expression of traditional packaging bags, while improving the environmental protection, practicality, and cultural added value of the packaging.

[0035] refer to Figure 1 and Figure 2 This invention provides a method for molding and surface treatment of cultural and creative products made from materials with plateau characteristics. The cultural and creative product is a packaging bag for yak jerky, and includes the following steps:

[0036] Step S1, Preparation of plateau-characteristic substrate: Select native yak hide from the Qinghai-Tibet Plateau, and after hair removal, degreasing, tanning and softening treatment, mix it with plateau barley straw fiber and plateau ghee-modified natural resin in a mass ratio of 6:3:1, and prepare composite substrate by hot pressing and cold pressing.

[0037] Step S2, Packaging bag structure forming: The composite substrate is die-cut, creasing, folding and sewing to form a self-standing and self-sealing bag structure. A visual window 3 is opened in the middle of the bag body, and a transparent protective strip pressed from plateau yak bone is inlaid at the window.

[0038] Step S3, Traditional Surface Pretreatment: Using the traditional highland ghee coating process, highland ghee heated to 50-60℃ is evenly coated onto the outer surface of the bag and left to stand for 24 hours to allow the ghee to penetrate into the substrate and form a natural protective layer.

[0039] Step S4, Cultural Elements Carving and Shaping: Using laser carving technology, plateau yak totems, Tibetan auspicious patterns, and the outline of the Qinghai-Tibet Plateau landform are carved on the surface of the bag. The carving depth is 0.1-0.3mm. After carving, the patterns are filled with natural mineral pigments from the plateau and then fixed by low-temperature drying.

[0040] Step S5, environmentally friendly sealing layer lamination: An environmentally friendly sealing layer made of highland beeswax and natural resin is laminated onto the inner surface of the bag. The thickness of the sealing layer is 0.05-0.1mm, achieving food-grade sealing protection.

[0041] Step S6, integration of cultural and creative functions: integrate the plateau traditional Tibetan incense slow-release module 6 inside the self-sealing strip 2 of the bag body, and set an unfoldable plateau culture instruction manual interlayer 5 at the bottom of the bag body to complete the preparation of the yak jerky cultural and creative packaging bag.

[0042] The specific method is as follows:

[0043] In step S1, the yak hide is tanned using a traditional plateau plant tanning process, selecting plateau red willow bark and wolfsbane extract as tanning agents. The tanning time is 7-10 days. After tanning, the hide has a softness of 3.5-4.5 mm and a tear strength ≥30 N / mm.

[0044] In step S1, after the barley straw fiber is crushed, screened, treated with alkali and bleached, the fiber length is 1-3mm and the fiber diameter is 0.02-0.05mm. After being mixed with cowhide and modified resin, it is hot-pressed at 120-140℃ and 8-10MPa, and the cold pressing setting pressure is 5-6MPa, and the setting time is 2-3h.

[0045] The core of step S1 is to select native materials from the Qinghai-Tibet Plateau to achieve cultural empowerment from the source.

[0046] Raw material selection: Yak hides from native yaks at altitudes above 3000 meters on the Qinghai-Tibet Plateau are selected. These hides are characterized by their high toughness, natural texture, and prominent cultural attributes, making them a natural carrier of plateau culture. Highland barley straw fiber is also selected. Highland barley is a major grain crop on the plateau, and highland barley straw fiber is environmentally friendly, biodegradable, and lightweight, while also embodying plateau agricultural culture. Modified natural resin from plateau ghee is also selected. Ghee is a traditional plateau food, and natural resin is derived from native plateau trees. The three are mixed in a 6:3:1 mass ratio to achieve a synergy between cultural elements and material properties.

[0047] Hide Processing: Utilizing traditional highland plant-based tanning techniques, extracts from highland red willow bark and wolfsbane are selected as tanning agents to replace traditional chemical tanning agents. This approach meets environmental requirements while preserving traditional highland craftsmanship. The tanning time is 7-10 days. After tanning, the softness of the hide is controlled at 3.5-4.5mm, and the tear strength is ≥30N / mm, ensuring the mechanical properties of the base material meet packaging requirements. Following tanning, the hide undergoes dehairing, degreasing, and softening treatments to remove impurities and retain its natural texture.

[0048] Fiber treatment: Barley straw is crushed and screened to select fibers with a length of 1-3mm and a diameter of 0.02-0.05mm. The fibers are then treated with alkali and bleached to remove impurities, thereby improving the uniformity and binding force of the fibers.

[0049] Composite molding: The treated cowhide, barley fiber, and modified resin are mixed and hot-pressed at 120-140℃ and 8-10MPa to fully fuse the materials; then cold-pressed at 5-6MPa for 2-3 hours to ensure the dimensional stability of the substrate. The final product is a composite substrate that combines the toughness of cowhide, the environmental friendliness of fiber, and the sealing properties of resin. The substrate thickness is 0.8-1.2mm, which meets the requirements of food packaging.

[0050] In step S2, the height of the self-standing self-sealing bag is 20-25cm, the width is 12-15cm, the bottom width is 4-6cm, the size of the visualization window 3 is 8×5cm, the edge of the window is reinforced by hand sewing with plateau yak thread, and the yak bone protective strip is ground, polished and disinfected, and then bonded to the bag body with natural resin.

[0051] The core of step S2 is to design a packaging bag structure that combines practicality and cultural significance, thereby achieving a combination of packaging function and cultural and creative attributes.

[0052] Structural Design: The bag adopts a self-standing and self-sealing structure with a height of 20-25cm, a width of 12-15cm, and a bottom width of 4-6cm, ensuring that the packaging bag can stand upright and improve the display effect; the self-sealing strip 2 is made of natural resin and cowhide composite, replacing the traditional plastic self-sealing strip 2, improving environmental protection and cultural appeal.

[0053] Visual Window 3 Design: An 8×5cm visual window is opened in the middle of the bag. A transparent protective strip made of plateau yak bone is inlaid in the window. The yak bone is ground, polished and disinfected. It not only realizes the visual display of the product, but also incorporates plateau yak culture elements. The edge of the window is reinforced by hand sewing with plateau yak thread, inheriting the traditional plateau handcraftsmanship.

[0054] Molding process: The composite substrate is die-cut, creasing, folding and sewing to make the bag body. The sewing adopts the traditional plateau hand sewing technique, using yak thread instead of industrial sewing thread to enhance the handmade texture and cultural attributes of the product.

[0055] In step S3, the ghee is applied by hand using a brushing process, with 2-3 brushings applied, and an interval of 4-6 hours between each brushing. The ambient temperature is 15-25℃ and the relative humidity is 40-60%. After penetration, excess ghee is removed by wiping with a plateau wool felt to form a uniform matte protective layer on the substrate surface.

[0056] The core of step S3 is to use the traditional highland ghee process to pre-treat the surface of the bag, forming a natural protective layer and giving the bag a highland cultural feel.

[0057] Butter treatment: Select traditional highland ghee, heat it to 50-60℃ to melt it, and use a manual brushing process to evenly apply it to the outer surface of the bag in 2-3 coats, with an interval of 4-6 hours between each coat to ensure that the ghee fully penetrates into the substrate.

[0058] Penetration and Shaping: After brushing, let it stand for 24 hours in an environment of 15-25℃ and 40-60% relative humidity to allow the ghee to penetrate into the gaps between the base material fibers, forming a natural protective layer and improving the waterproof, oil-proof, and aging resistance of the base material. After standing, use a plateau wool felt to wipe away excess ghee on the surface, so that the surface of the bag forms a uniform matte texture, retains the natural texture of the cowhide, and presents the texture of traditional plateau handicrafts.

[0059] In step S4, the laser engraving uses a fiber laser engraving machine with an engraving power of 15-25W and an engraving speed of 300-500mm / s. The natural mineral pigments used for filling after engraving are plateau cinnabar, azurite, malachite, and ochre. 5-8% of natural resin is added to the pigments as a binder. The low-temperature drying temperature is 35-45℃ and the drying time is 12-18h.

[0060] The core of step S4 above is to deeply integrate plateau cultural elements into the surface of the bag through laser engraving and filling with natural mineral pigments, fundamentally solving the problem of the monotonous cultural expression of traditional packaging bags.

[0061] Laser engraving: Using a fiber laser engraving machine with an engraving power of 15-25W and an engraving speed of 300-500mm / s, cultural elements such as plateau yak totems, Tibetan auspicious patterns, and the outline of the Qinghai-Tibet Plateau are engraved on the surface of the bag. The engraving depth is controlled at 0.1-0.3mm to ensure that the patterns are clear without damaging the structure of the substrate.

[0062] Pigment filling: After the carving is completed, natural mineral pigments from the plateau (cinnabar, azurite, malachite, ochre) are used to fill the patterns. 5-8% natural resin is added to the pigments as a binder to improve the adhesion and durability of the pigments. After filling, the patterns are dried at a low temperature of 35-45℃ for 12-18 hours to fix the pigments in the carved patterns, forming brightly colored and long-lasting cultural patterns. This replaces traditional printing processes and realizes a three-dimensional presentation of cultural elements, fundamentally solving the problem of the flat cultural expression of traditional packaging bags.

[0063] In step S5, the environmentally friendly sealing layer is made by mixing highland beeswax and natural resin in a mass ratio of 7:3 at a mixing temperature of 60-70℃. It is then applied to the inner surface of the bag using a roller coating process. After lamination, it is cured at a low temperature of 30-35℃ for 24 hours. The water vapor permeability of the sealing layer is ≤5g / (m²). 2 •24h) meets the safety standards for food contact materials.

[0064] The core of step S5 above is to prepare an environmentally friendly food-grade sealing layer to ensure the sealing and preservation function of the packaging bag, while also conforming to the concept of environmental protection in high-altitude areas.

[0065] Preparation of sealing layer: Select plateau beeswax and natural tree resin in a mass ratio of 7:3, heat to 60-70℃ to melt them, and make an environmentally friendly sealant.

[0066] Composite Process: A roller coating process is used to evenly coat the sealant onto the inner surface of the bag, with the sealing layer thickness controlled at 0.05-0.1mm. After coating, it is cured at a low temperature of 30-35℃ for 24 hours to form a dense sealing layer. The water vapor transmission rate of this sealing layer is ≤5g / (m²·24h), which can effectively block oxygen and moisture, extend the shelf life of yak jerky, and meet the safety standards for food contact materials. It is biodegradable, pollution-free, and in line with the concept of plateau ecological environmental protection.

[0067] In step S6, the Tibetan incense slow-release module is made by grinding traditional Tibetan incense raw materials from the plateau into powder, encapsulating them in a breathable cotton bag, and embedding them inside the self-sealing strip 2. The Tibetan incense raw materials include plateau cypress, saffron, spikenard, and cloves, and the slow-release period is 3-6 months. The cultural instruction manual interlayer 5 is made of the same composite substrate as the bag body. The interlayer is printed with information on plateau yak meat culture and traditional Tibetan craftsmanship, and can be unfolded from the bottom of the bag body.

[0068] The core of step S6 is to integrate cultural and creative functions, further enhance the cultural added value of the packaging bag, and make the packaging bag a complete cultural and creative product.

[0069] Tibetan Incense Slow-Release Module: A traditional Tibetan incense slow-release module 6 is integrated inside the self-sealing strip 2 of the bag. Traditional Tibetan incense raw materials such as plateau cypress, saffron, spikenard, and cloves are ground into powder, sealed in a breathable cotton bag, and embedded inside the self-sealing strip 2. The Tibetan incense can be slowly released, making the packaging bag also have an aromatherapy function, conveying the traditional Tibetan incense culture of the plateau. The slow-release period is 3-6 months.

[0070] Cultural instruction leaflet 5: An unfoldable cultural instruction leaflet is set at the bottom of the bag. The leaflet is made of the same composite material as the bag and is printed with content such as plateau yak meat culture, Tibetan traditional crafts, and plateau ecological culture. Consumers can unfold the leaflet from the bottom of the bag to learn about plateau culture, making the packaging bag a carrier of cultural dissemination.

[0071] The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials also includes step S7, finished product inspection and packaging: the prepared packaging bags are tested for sealing, food safety, and integrity of cultural elements. After passing the tests, they are wrapped in traditional plateau cotton paper and packaged in gift boxes printed with plateau cultural elements to complete the final preparation of the cultural and creative products.

[0072] This invention also includes a yak jerky packaging bag, characterized in that it is prepared using the molding and surface treatment method of the above-mentioned plateau characteristic material cultural and creative products. The packaging bag includes a composite substrate bag body 1, a visual window 3, a yak bone protective strip, a cultural carving pattern 4, an environmentally friendly sealing layer, a Tibetan incense slow-release module 6, and a cultural instruction manual interlayer 5.

[0073] Example 1

[0074] A method for molding and surface treatment of cultural and creative products made from plateau-characteristic materials, used to prepare cultural and creative packaging bags for yak jerky, includes the following steps:

[0075] Step S1: Preparation of Plateau-Specific Substrate: Native yak hides from the Qinghai-Tibet Plateau at altitudes above 3000 meters are selected. After hair removal and degreasing, they are tanned using extracts of plateau red willow bark and wolfsbane for 8 days. The resulting hide has a softness of 4.0 mm and a tear strength of 35 N / mm. Plateau barley straw is crushed, and fibers with a length of 2 mm and a diameter of 0.03 mm are selected. After alkali treatment and bleaching, these fibers are mixed with the treated hide and plateau ghee-modified natural resin at a mass ratio of 6:3:1. The mixture is then hot-pressed at 130℃ and 9 MPa, followed by cold-pressing at 5.5 MPa for 2.5 hours to prepare a composite substrate with a thickness of 1.0 mm. Figure 3 As shown, it includes a cowhide layer 11, a barley fiber layer 12, and a modified resin layer 13.

[0076] Step S2, Packaging Bag Structure Forming: The composite substrate is die-cut and creasing to form a stand-up self-sealing bag blank with a height of 22cm, a width of 13cm, and a bottom width of 5cm; an 8×5cm visibility window 3 is opened in the middle of the bag body, and a polished and sterilized transparent protective strip 4 of plateau yak bone is inlaid at the window. The edges of the window are reinforced by hand sewing with plateau yak thread; after folding and sewing, a stand-up self-sealing bag is formed, such as... Figure 2 As shown.

[0077] Step S3, Traditional process surface pretreatment: Select traditional highland ghee, heat it to 55℃ to melt it, and apply it evenly to the outer surface of the bag in two brushing processes, with an interval of 5 hours between each brushing; let it stand for 24 hours in an environment of 20℃ and 50% relative humidity to allow the ghee to penetrate into the substrate; use highland wool felt to wipe away excess ghee on the surface to form a uniform matte protective layer.

[0078] Step S4, Cultural Element Carving: Using a fiber laser engraving machine at 20W power and 400mm / s speed, carve the plateau yak totem, the six-syllable mantra Tibetan script, and the outline of the Tanggula Mountains of the Qinghai-Tibet Plateau onto the surface of the bag, with a carving depth of 0.2mm; use plateau cinnabar, azurite, malachite, and ochre mineral pigments, adding 6% natural resin as a binder, to fill the carved patterns; dry at 40℃ for 15 hours to fix the pigments, forming a three-dimensional cultural carving pattern 4, as shown. Figure 2 As shown.

[0079] Step S5, Environmentally Friendly Sealing Layer Lamination: Mix highland beeswax and natural resin at a mass ratio of 7:3, heat to 65℃ to melt, and make an environmentally friendly sealant; use a roller coating process to evenly laminate the sealant onto the inner surface of the bag, with a sealing layer thickness of 0.08mm; after curing at 32℃ for 24h, an environmentally friendly sealing layer is formed, with a water vapor permeability of 4g / (m²·24h), which meets food contact standards.

[0080] Step S6, Cultural and Creative Function Integration: A Tibetan incense slow-release module 6 is integrated inside the self-sealing strip 2 of the bag. Highland cypress, saffron, nard, and cloves are ground into powder in a mass ratio of 5:2:2:1, sealed in a breathable cotton bag, and embedded inside the self-sealing strip. The slow-release period is 4 months. An unfoldable cultural instruction manual layer 5 is set at the bottom of the bag. The layer is made of the same composite substrate and printed with information on highland yak meat culture and Tibetan tanning techniques, such as… Figure 2 and Figure 4 As shown.

[0081] Step S7, Finished Product Inspection and Packaging: The packaging bags are tested for sealing, food safety, and integrity of cultural elements. After passing the tests, they are wrapped in traditional highland cotton paper and sealed in gift boxes printed with highland cultural elements to complete the preparation.

[0082] Example 2

[0083] The difference from Example 1 is that in step S1, the cowhide tanning time is 10 days, the barley fiber length is 3mm, the hot pressing temperature is 140℃, and the pressure is 10MPa; in step S3, the ghee is brushed 3 times and the standing temperature is 25℃; in step S4, the carving power is 25W, the speed is 500mm / s, and the amount of pigment added is 8%; the remaining steps are the same as in Example 1.

[0084] Example 3

[0085] The difference from Example 1 is that in step S1, the cowhide tanning time is 7 days, the barley fiber length is 1 mm, the hot pressing temperature is 120℃, and the pressure is 8 MPa; in step S3, the ghee is brushed twice, and the standing temperature is 15℃; in step S4, the carving power is 15W, the speed is 300 mm / s, and the amount of pigment added is 5%; the remaining steps are the same as in Example 1.

[0086] Comparative Example 1 uses a traditional yak jerky packaging bag made of ordinary kraft paper with a yak pattern printed on the surface. It does not have a composite substrate, engraved patterns, or integrated cultural and creative functions. All other conditions are the same as in Example 1.

[0087] Performance testing

[0088] The packaging bags of Examples 1-3 and Comparative Example 1 were subjected to performance tests, and the results are shown in Table 1 below:

[0089] Table 1

[0090] Test Project Example 1 Example 2 Example 3 Comparative Example 1 Richness of cultural expression (1-10 points) 9.5 9.3 9.4 3.2 Tear strength (N / mm) 35 36 34 18 <![CDATA[Water vapor transmission rate (g / (m 2 ·24 h))]]> 4.0 3.8 4.2 12.5 Environmentally friendly and biodegradable Fully biodegradable Fully biodegradable Fully biodegradable Partially biodegradable Completeness of cultural and creative functions whole whole whole none Consumer cultural experience rating (1-10 points) 9.2 9.0 9.1 2.8

[0091] The test results show that the packaging bags prepared according to the embodiments of the present invention are significantly superior to traditional packaging bags in terms of cultural expression richness, mechanical properties, sealing performance, environmental protection, and consumer experience. This fundamentally solves the technical problem of the limited cultural expression of traditional packaging bags and realizes the upgrade of packaging products to cultural and creative products.

[0092] The inventiveness of this invention is mainly reflected in the following three aspects:

[0093] (1) Creativity of the technical solution: In response to the technical problem of the single cultural expression of traditional yak jerky packaging bags, this invention proposes a whole-process technical solution of "preparation of plateau characteristic base material, traditional process pretreatment, three-dimensional cultural carving, and integration of cultural and creative functions". It deeply integrates the original materials such as plateau yak hide, barley straw, ghee, and Tibetan incense with modern packaging technology, breaks through the technical prejudice of traditional packaging relying solely on flat printing to achieve cultural expression, fundamentally solves the problems of existing technology, and has outstanding substantive features.

[0094] (2) Significant progress in technical effect: The packaging bag prepared by the present invention not only realizes the basic function of sealing and preservation, but also becomes a cultural and creative product that carries the plateau culture. The richness of cultural expression and consumer experience score are more than twice that of traditional packaging bags. At the same time, it has the advantages of being environmentally friendly and biodegradable and having excellent mechanical properties, thus achieving significant progress in technical effect.

[0095] (3) Non-obviousness of the technical solution: The technical solution of the present invention is not a simple superposition of the prior art, but a creative combination of traditional plateau craftsmanship, natural materials and modern technology for the specific needs of plateau specialty food packaging. It cannot be obtained by ordinary people in the art through conventional improvements based on the prior art.

[0096] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for molding and surface treatment of cultural and creative products made from materials with plateau characteristics, wherein the cultural and creative product is a packaging bag for yak jerky, characterized in that, Includes the following steps: Step S1, Preparation of plateau-characteristic substrate: Select native yak hide from the Qinghai-Tibet Plateau, and after hair removal, degreasing, tanning and softening treatment, mix it with plateau barley straw fiber and plateau ghee-modified natural resin in a mass ratio of 6:3:1, and prepare composite substrate by hot pressing and cold pressing. Step S2, Packaging bag structure forming: The composite substrate is die-cut, creasing, folding and sewing to form a self-standing and self-sealing bag structure. A visual window is opened in the middle of the bag body, and a transparent protective strip made of plateau yak bone is inlaid at the window. Step S3, Traditional process surface pretreatment: Using the traditional plateau ghee coating process, plateau ghee heated to 50-60℃ is evenly coated on the outer surface of the bag and left to stand for 24 hours to allow the ghee to penetrate into the substrate and form a natural protective layer. Step S4, Cultural Elements Carving and Shaping: Using laser carving technology, plateau yak totems, Tibetan auspicious patterns, and the outline of the Qinghai-Tibet Plateau landform are carved on the surface of the bag. The carving depth is 0.1-0.3mm. After carving, the patterns are filled with natural mineral pigments from the plateau and fixed by low-temperature drying. Step S5, environmentally friendly sealing layer lamination: An environmentally friendly sealing layer made of highland beeswax and natural resin is laminated onto the inner surface of the bag. The thickness of the sealing layer is 0.05-0.1mm, achieving food-grade sealing protection. Step S6, integration of cultural and creative functions: Integrate a slow-release module of traditional Tibetan incense into the self-sealing strip of the bag, and set an unfoldable plateau culture instruction manual interlayer at the bottom of the bag to complete the preparation of the yak jerky cultural and creative packaging bag.

2. The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials according to claim 1, characterized in that, In step S1, the yak hide is tanned using a traditional plateau plant tanning process, selecting plateau red willow bark and wolfsbane extract as tanning agents. The tanning time is 7-10 days. After tanning, the hide has a softness of 3.5-4.5 mm and a tear strength ≥30 N / mm.

3. The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials according to claim 1, characterized in that, In step S1, after the barley straw fiber is crushed, screened, treated with alkali and bleached, the fiber length is 1-3mm and the fiber diameter is 0.02-0.05mm. After being mixed with cowhide and modified resin, it is hot-pressed at 120-140℃ and 8-10MPa, and the cold pressing setting pressure is 5-6MPa, and the setting time is 2-3h.

4. The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials according to claim 1, characterized in that, In step S2, the height of the self-sealing bag is 20-25cm, the width is 12-15cm, the bottom width is 4-6cm, the size of the viewing window is 8×5cm, the edge of the window is reinforced by hand sewing with plateau yak thread, and the yak bone protective strip is ground, polished and disinfected, and then bonded to the bag body with natural resin.

5. The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials according to claim 1, characterized in that, In step S3, the ghee is applied by hand using a brushing process, with 2-3 brushings applied, and an interval of 4-6 hours between each brushing. The ambient temperature is 15-25℃ and the relative humidity is 40-60%. After penetration, excess ghee is removed by wiping with a plateau wool felt to form a uniform matte protective layer on the substrate surface.

6. The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials according to claim 1, characterized in that, In step S4, the laser engraving uses a fiber laser engraving machine with an engraving power of 15-25W and an engraving speed of 300-500mm / s. The natural mineral pigments used for filling after engraving are plateau cinnabar, azurite, malachite, and ochre. 5-8% of natural resin is added to the pigments as a binder. The low-temperature drying temperature is 35-45℃ and the drying time is 12-18h.

7. The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials according to claim 1, characterized in that, In step S5, the environmentally friendly sealing layer is made by mixing highland beeswax and natural resin in a mass ratio of 7:3 at a mixing temperature of 60-70℃. It is then applied to the inner surface of the bag using a roller coating process. After lamination, it is cured at a low temperature of 30-35℃ for 24 hours. The water vapor permeability of the sealing layer is ≤5g / (m²). 2 •24h) meets the safety standards for food contact materials.

8. The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials according to claim 1, characterized in that, In step S6, the Tibetan incense slow-release module is made by grinding traditional Tibetan incense raw materials from the plateau into powder, encapsulating them in a breathable cotton bag, and embedding them inside a self-sealing strip. The Tibetan incense raw materials include plateau cypress, saffron, spikenard, and cloves, and the slow-release period is 3-6 months. The cultural instruction manual interlayer is made of the same composite substrate as the bag body, and the interlayer is printed with information on plateau yak meat culture and traditional Tibetan craftsmanship. It can be unfolded from the bottom of the bag body.

9. The molding and surface treatment method for cultural and creative products made from plateau-characteristic materials according to claim 1, characterized in that, It also includes step S7, finished product inspection and packaging: the prepared packaging bags are tested for sealing, food safety, and integrity of cultural elements. After passing the tests, they are wrapped in traditional highland cotton paper and packaged in gift boxes printed with highland cultural elements, thus completing the final preparation of the cultural and creative products.

10. A packaging bag for yak jerky, characterized in that, The packaging bag is made using the molding and surface treatment method of plateau-characteristic material cultural and creative products as described in any one of claims 1-9. The packaging bag includes a composite substrate bag body, a visual window, a yak bone protective strip, cultural carving patterns, an environmentally friendly sealing layer, a Tibetan incense slow-release module, and a cultural instruction manual interlayer.

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