Connected packing paper for steaming quick-frozen steamed stuffed buns

Abstract

The utility model relates to the technical field of food packaging and processing auxiliary articles, and discloses one-piece packing paper for steaming quick-frozen steamed stuffed buns, which comprises base paper, food-grade silicone oil layers are coated on the upper surface and the lower surface of the base paper, a plurality of micropore arrays are arranged at the top of the food-grade silicone oil layer on the upper surface, through holes are arranged inside the base paper, and the through holes are communicated with the food-grade silicone oil layers. A plurality of air hole structures are arranged in the through hole, and each air hole structure comprises a temperature-sensitive shrink film embedded in the through hole and a fixing frame. According to the utility model, the micropore array is formed by combining the bamboo fiber composite material with the nanoimprint technology, so that the problem of silicone oil migration is effectively avoided while the anti-sticking performance is ensured, the safety and the environmental protection property of the product are improved, and meanwhile, through the air hole structure consisting of the temperature-sensitive shrink film and the fixed frame, the anti-sticking performance of the product is improved. The aperture can be automatically adjusted according to the temperature change, so that the uniform steam distribution is ensured, and the steaming time is remarkably shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to food packaging and processing auxiliary supplies technical field especially, relate to a kind of steam quick-frozen steamed stuffed buns with conjoined pad paper. BACKGROUND

[0002] In the field of quick-frozen food processing, the conjoined pad paper used when steaming quick-frozen steamed stuffed buns is a key auxiliary material, and its main functions include anti-sticking, air permeability and easy separation. However, the conjoined pad paper in the prior art still has many deficiencies, especially in the selection of base material, structural design and functional integration, which need to be improved.

[0003] For example, Chinese Utility Model Patent No. 202221666542.9 discloses a conjoined pad paper for steaming quick-frozen steamed stuffed buns, which includes multiple oil papers. Each oil paper includes a base paper and two layers of oil film. The upper and lower ends of each base paper are provided with oil films. The upper end surface of the upper oil film is provided with multiple air holes. The lower ends of the air holes sequentially penetrate the upper end surface of the upper oil film, the upper end surface of the base paper, and the upper end surface of the lower oil film. The utility model uses a 2mm connecting point between every two adjacent oil papers. This allows an entire sheet to be placed in a baking tray. Workers can directly place steamed stuffed buns on it. It is also convenient to take out the steamed stuffed buns individually. This design is convenient to use and reduces the workload of workers.

[0004] When steaming quick-frozen steamed stuffed buns, conjoined pad paper is usually used to prevent the steamed stuffed buns from sticking together and to ensure the efficiency and food hygiene of the steaming process. In the prior art, conjoined pad paper often uses silicon oil paper as the base material, which is coated with a silicon oil layer to achieve anti-sticking performance. However, there is a risk of xylene residue during high-temperature steaming, which not only affects food safety but also causes environmental burden due to its non-degradable nature. Although bamboo fiber-based paper or corn starch-based composite materials have been proposed as alternatives, they have environmental friendliness and antibacterial properties. However, it is still a technical difficulty to balance anti-sticking performance and degradability in actual application. In addition, the air holes formed by punching in traditional processes can easily cause silicon oil migration, further affecting product safety and use effect. At the same time, meat buns and other soup-containing foods may have oil leakage problems during steaming. If not collected in time, it will cause the bottom of the steamed stuffed bun to soak, affecting the taste and quality. SUMMARY

[0005] The utility model aims to solve the problems in the prior art and provides a conjoined pad paper for steaming quick-frozen steamed stuffed buns.

[0006] In order to achieve the above object, the utility model discloses the following technical scheme: a kind of steaming quick-frozen steamed stuffed buns with conjoined paper, including base paper, the upper and lower surfaces of the base paper are coated with food-grade silicone oil layer, a plurality of micropore arrays are set in the top of the food-grade silicone oil layer on the upper surface, the inside of the base paper is provided with through-hole, the inside of the through-hole is provided with a plurality of air-permeable hole structures, the air-permeable hole structure includes temperature-sensitive shrink film embedded in the inside of through-hole and fixed frame, the two side edges of the temperature-sensitive shrink film are connected with the inner wall of fixed frame by hot melt, the outer wall of the fixed frame is equipped with a plurality of protruding clamping blocks, the protruding clamping block is used to adapt and fix with the inside of base paper Preset groove, the outer wall of the base paper is provided with connecting point component, the top of the base paper is provided with flow guide groove structure.

[0007] The food-grade silicone oil layer has a thickness of 0.02mm to 0.03mm, the temperature-sensitive shrink film has a thickness of 0.05mm to 0.08mm, an initial diameter of 5mm, and shrinks to 3mm to 4mm when the temperature reaches 80℃, and the fixed frame has a thickness of 0.1mm and an outer diameter of 6mm.

[0008] As a further description of the above technical solution:

[0009] The connecting point component includes a water-soluble colloid layer and a separation film arranged between adjacent regions of the base paper, the water-soluble colloid layer is made of hydroxypropyl methyl cellulose material into a rectangular sheet, the upper and lower surfaces of the water-soluble colloid layer are provided with a separation film, and the separation film is a microporous film made of polylactic acid material.

[0010] The water-soluble colloid layer has a thickness of 0.03mm to 0.05mm and a width of 2mm to 3mm, and the separation film has a thickness of 0.01mm to 0.02mm and a surface provided with a plurality of air-permeable holes with a diameter of 0.05mm, which can gradually dissolve to realize automatic separation function when encountering steam.

[0011] As a further description of the above technical solution:

[0012] The flow guide groove structure includes a main groove and a branch groove engraved on the surface of the base paper, the main groove extends radially outward along the center of the base paper, and the branch groove is a straight-line type groove and is connected with the main groove.

[0013] The main groove has a width of 1mm to 1.5mm and a depth of 0.2mm to 0.3mm, and the branch groove has a width of 0.5mm to 0.8mm and a depth of 0.1mm to 0.2mm.

[0014] As a further description of the above technical solution:

[0015] The number of the main grooves is six and is radially arranged with the center of the base paper as the center, and the number of the branch grooves is twelve and is evenly distributed between adjacent main grooves.

[0016] The exuded oil can be guided to the edge of the base paper for collection by using the hydrophobic property of the silicone oil layer.

[0017] As a further description of the above technical solution:

[0018] The base paper is made of bamboo fiber composite material, and the upper and lower surfaces of the base paper are provided with anti-slip textures in the form of intersecting grids.

[0019] The thickness of the base paper ranges from 0.2mm to 0.3mm, and the height of the anti-slip texture is 0.05mm.

[0020] As a further description of the above technical solution:

[0021] The number of the protruding clamping blocks is four and is evenly distributed on the outer wall of the fixed frame.

[0022] As a further description of the above technical solution:

[0023] The micropore array is a hexagonal honeycomb micropore array formed by nano-imprinting technology.

[0024] The micropore array has a pore diameter of 0.1mm to 0.15mm and a pore spacing of 0.2mm.

[0025] As a further description of the above technical solution:

[0026] The temperature-sensitive shrink film is made of a film of polyvinyl alcohol and poly-N-isopropyl acrylamide copolymer material.

[0027] The utility model has the following beneficial effects:

[0028] 1. Compared with the prior art, the steam quick-frozen steamed stuffed buns use the continuous pad paper, the micropore array formed by bamboo fiber composite material combined with nano-imprinting technology can effectively avoid the problem of silicone oil migration while ensuring the anti-sticking performance, improve the safety and environmental protection of the product, and the air permeation hole structure composed of the temperature-sensitive shrink film and the fixed frame can automatically adjust the pore size according to the temperature change, ensure uniform steam distribution and significantly shorten the steaming time.

[0029] 2. Compared with the prior art, the steam quick-frozen steamed stuffed buns use the continuous pad paper, the hydrophobic property of the silicone oil layer is used by the flow guide groove structure to guide the exuded oil of the quick-frozen steamed stuffed buns to the edge of the base paper during the steaming process, avoid the accumulation of oil on the bottom of the steamed stuffed bun to affect the taste, and keep the bottom of the steamed stuffed bun dry and clean. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 A whole structure three-dimensional schematic view of the continuous pad paper for steaming and quick freezing of steamed buns is provided in the utility model.

[0031] Figure 2 Another view base paper structure three-dimensional schematic view of the continuous pad paper for steaming and quick freezing of steamed buns is provided in the utility model.

[0032] Figure 3 A connecting point assembly structure three-dimensional schematic view of the continuous pad paper for steaming and quick freezing of steamed buns is provided in the utility model.

[0033] Figure 4 A temperature-sensitive shrinkage film structure three-dimensional schematic view of the continuous pad paper for steaming and quick freezing of steamed buns is provided in the utility model.

[0034] Legend:

[0035] 1, base paper; 2, food-grade silicone oil layer; 3, micropore array; 4, temperature-sensitive shrinkage film; 5, fixed frame; 6, protruding clamping block; 7, water-soluble colloid layer; 8, separation film; 9, main channel; 10, branch channel; 11, anti-skid texture; 12, through hole. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0037] Reference Figures 1-4The utility model provides a kind of steam quick-frozen steamed stuffed buns with connected pad paper: including base paper 1, the upper and lower surfaces of base paper 1 are coated with food-grade silicon oil layer 2, a plurality of micropore arrays 3 are set in the top of upper surface food-grade silicon oil layer 2, through hole 12 is set in the inside of base paper 1, a plurality of breathable hole structures are arranged in the inside of through hole 12, breathable hole structure includes temperature-sensitive shrink film 4 and fixed frame 5 that are embedded in the inside of through hole 12, the two side edges of temperature-sensitive shrink film 4 are connected with the inner wall of fixed frame 5 by hot melt mode, the outer wall of fixed frame 5 is equipped with several convex blocks 6, and the convex blocks 6 are used to be adapted and fixed with the inside preset groove of base paper 1, the outer wall of base paper 1 is provided with connecting point assembly, the top of base paper 1 is provided with flow guide groove structure, the thickness of food-grade silicon oil layer 2 is 0.02mm to 0.03mm, the thickness of temperature-sensitive shrink film 4 is 0.05mm to 0.08mm, the initial diameter is 5mm, and shrinks to 3mm to 4mm when temperature reaches 80 DEG C, the thickness of fixed frame 5 is 0.1mm and the outer diameter is 6mm, by the micropore array 3 formed by adopting bamboo fiber composite material in combination with nano-imprinting technology, while guaranteeing the anti-sticking performance, effectively avoid the silicon oil migration problem, improve the safety and environmental protection of product, simultaneously, the breathable hole structure that temperature-sensitive shrink film 4 and fixed frame 5 are formed, can automatically adjust the size of aperture according to temperature change, ensure that steam is evenly distributed and significantly shorten steaming time, by the setting of temperature-sensitive shrink film 4, when temperature reaches 80 DEG C, temperature-sensitive shrink film 4 will automatically shrink to 3mm to 4mm, to adjust the size of breathable hole, can dynamically adjust the aperture of breathable hole according to temperature change in steaming process, ensure that steam is evenly distributed and significantly shorten steaming time, such as in the early stage of steaming, larger aperture allows more steam to enter, accelerates the thawing and heating of quick-frozen steamed stuffed buns;With temperature increasing, aperture gradually reduces, reduces steam loss, maintains stable steaming environment.

[0038] Connecting point assembly includes water-soluble colloid layer 7 and separation membrane 8 arranged between adjacent regions of base paper 1, water-soluble colloid layer 7 is made of hydroxypropyl methyl cellulose material into a rectangular sheet, the upper and lower surfaces of water-soluble colloid layer 7 are provided with separation membrane 8, separation membrane 8 is made of polylactic acid material into microporous film, the thickness of water-soluble colloid layer 7 is 0.03mm to 0.05mm, the width is 2mm to 3mm, the thickness of separation membrane 8 is 0.01mm to 0.02mm, and the surface is provided with a plurality of breathable holes with a diameter of 0.05mm, which can gradually dissolve to realize automatic separation function after meeting steam, in the steaming process, separation membrane 8 gradually dissolves after meeting steam, so that adjacent base paper 1 regions realize automatic separation, not only reduce the damage risk caused by manual operation, but also improve user experience, such as in practical application, user only needs to place connected pad paper in steamer, without manually tearing each pad paper unit, separation membrane 8 will automatically complete separation in the steaming process, simplify operation process.

[0039] The guide groove structure includes main grooves 9 and branch grooves 10 engraved on the surface of the base paper 1. The main grooves 9 extend radially outward from the center of the base paper 1, and the branch grooves 10 are linear grooves connected to the main grooves 9. The width of the main grooves 9 is 1-1.5 mm, and the depth is 0.2-0.3 mm. The width of the branch grooves 10 is 0.5-0.8 mm, and the depth is 0.1-0.2 mm. There are six main grooves 9 arranged radially around the center of the base paper 1, and twelve branch grooves 10 evenly distributed between adjacent main grooves 9. The guide groove structure can use the hydrophobic properties of the silicone oil layer to guide the exuded oil to the edge of the base paper 1 for collection. The guide groove structure uses the hydrophobic properties of the food-grade silicone oil layer 2 to guide the oil exuded by the frozen steamed buns during steaming to the edge of the base paper 1 for collection, avoiding the accumulation of oil at the bottom of the buns and affecting the taste. When steaming buns with a lot of oil, the guide groove structure can effectively collect the exuded oil, keeping the bottom of the buns dry and clean.

[0040] The base paper 1 is made of bamboo fiber composite material, and the upper and lower surfaces of the base paper 1 are provided with anti-slip texture 11. The anti-slip texture 11 is in the form of a cross grid, and the thickness of the base paper 1 is in the range of 0.2-0.3 mm. The height of the anti-slip texture 11 is 0.05 mm, and the number of protruding clamping blocks 6 is four and evenly distributed on the outer wall of the fixed frame 5. The micro-pore array 3 is a hexagonal honeycomb micro-pore array 3 formed by nano-imprinting technology. The pore diameter of the micro-pore array 3 is 0.1-0.15 mm, and the pore spacing is 0.2 mm. The temperature-sensitive shrinkage film 4 is made of polyvinyl alcohol and poly-N-isopropyl acrylamide. The cross grid anti-slip texture 11 on the surface of the base paper 1 further enhances the friction between the base paper 1 and the steamer, ensuring that it does not slip during operation.

[0041] Working principle: First, the base paper 1 is made of bamboo fiber composite material, and the surface is coated with food-grade silicone oil layer 2. The hexagonal honeycomb micro-pore array 3 is formed by nano-imprinting technology. It can not only prevent the adhesion of buns by using the hydrophobicity of silicone oil, but also balance the steam permeation and prevent oil migration through micro-pores. When steaming buns, the air-permeable hole structure embedded in the base paper 1 is used. When the temperature rises to 80℃, the temperature-sensitive shrinkage film 4 shrinks dynamically, thereby intelligently adjusting the steam flow. For example, during the initial steaming period, large pore size is used to accelerate thawing, and in the later period, small pore size is used to maintain heat efficiency. At the same time, the protruding clamping blocks 6 of the fixed frame 5 ensure the stability of the structure. The water-soluble colloid layer 7 of the connecting point assembly dissolves under the action of steam, and the polylactic acid separation film 8 ruptures, causing the adjacent pad paper to automatically separate, thereby eliminating the need for manual tearing. At the same time, the guide groove system engraved on the surface of the base paper 1 forms an oil-repellent network through the arc-shaped main grooves 9 and branch grooves 10, and uses the hydrophobic properties of the silicone oil layer to direct the exuded oil to the edge, avoiding the retention of oil and affecting the taste.

[0042] In summary, the utility model discloses through the synergies of base paper 1, air hole structure, connecting point subassembly and diversion groove structure, solved many problems existing in the prior art. Base paper 1 adopts the micropore array 3 formed by bamboo fiber composite material and nano imprint technology, guarantees the anti-sticking performance and avoids the silicone oil migration problem, significantly improves the safety and environmental protection of product. Air hole structure realizes the function of automatic regulation of aperture according to temperature change through the combination of temperature-sensitive shrink film 4 and fixed frame 5, ensures that the steam distribution is uniform and shortens the steaming time, connecting point subassembly realizes the non-destructive separation in the steaming process through the design of water-soluble colloid layer 7 and separation membrane 8, reduces the breakage risk caused by manual operation. The diversion groove structure effectively collects the exuded oil through the reasonable layout of main groove 9 and branch groove 10, improves the user's use experience. The structure and operating principle of the above-mentioned parts cooperate with each other, which constitutes the core technical innovation point of the utility model, and has significant practical application value.

[0043] Finally, it should be noted that: the above only for the preferred embodiment of the utility model has, and does not limit the utility model, although the utility model is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. A continuous pad for steam quick-frozen buns, comprising a base paper (1), characterized in that: The upper and lower surfaces of the base paper (1) are coated with a food-grade silicone oil layer (2), and a plurality of micropore arrays (3) are arranged on the top of the food-grade silicone oil layer (2) on the upper surface. A through hole (12) is arranged in the base paper (1), and a plurality of air permeable hole structures are arranged in the through hole (12). The air permeable hole structure comprises a temperature-sensitive shrink film (4) embedded in the through hole (12) and a fixed frame (5). The two side edges of the temperature-sensitive shrink film (4) are connected to the inner wall of the fixed frame (5) by a hot melt method. The outer wall of the fixed frame (5) is provided with a plurality of protruding clamping blocks (6), which are used to fit and fix the pre-designed grooves in the base paper (1). The outer wall of the base paper (1) is provided with a connection point assembly, and the top of the base paper (1) is provided with a flow guide groove structure.

2. The kind of continuous paper pad for quick-frozen steamed buns according to claim 1, characterized in that: The connection point assembly comprises a water-soluble colloid layer (7) and a separation membrane (8) arranged between adjacent regions of the base paper (1). The water-soluble colloid layer (7) is made of hydroxypropyl methyl cellulose material in the form of a rectangular sheet. The upper and lower surfaces of the water-soluble colloid layer (7) are provided with a separation membrane (8). The separation membrane (8) is a microporous film made of polylactic acid material.

3. The kind of continuous paper pad for quick-frozen steamed buns according to claim 1, characterized in that: The flow guide groove structure comprises a main groove (9) and a branch groove (10) engraved on the surface of the base paper (1). The main groove (9) extends radially outward from the center of the base paper (1). The branch groove (10) is a linear groove and is connected to the main groove (9).

4. The kind of continuous paper pad for quick-frozen steamed buns according to claim 3, characterized in that: The number of main grooves (9) is six and they are arranged radially around the center of the base paper (1). The number of branch grooves (10) is twelve and they are evenly distributed between adjacent main grooves (9).

5. The kind of continuous paper pad for quick-frozen steamed buns according to claim 1, characterized in that: The base paper (1) is made of bamboo fiber composite material. The upper and lower surfaces of the base paper (1) are provided with anti-slip textures (11), which are cross-grid shaped.

6. The kind of continuous paper pad for quick-frozen steamed buns according to claim 1, characterized in that: The number of protruding clamping blocks (6) is four and they are evenly distributed on the outer wall of the fixed frame (5).

7. The kind of continuous paper pad for quick-frozen steamed buns according to claim 1, characterized in that: The micropore array (3) is a hexagonal honeycomb micropore array (3) formed by nanoimprint technology.

8. The kind of continuous paper pad for quick-frozen steamed buns according to claim 1, characterized in that: The temperature-sensitive shrink film (4) is a film made of polyvinyl alcohol and poly-N-isopropyl acrylamide copolymer material.

Images