Textile compressing and packaging method

Abstract

The invention discloses a textile compressing and packaging method which comprises the following steps: S1, sequentially superposing to-be-compressed textiles according to the order of gram weight from small to large, and embedding a thermal response type restraint layer between adjacent layers to form a to-be-compressed package body; s2, 10-80 kPa pressure is applied to the ladle body to form a pre-compression state; s3, a heat-sealing material is coated under the condition that the compression state is maintained, the heat-sealing material is heated to 60-110 DEG C, the restraint layer is activated to generate axial shrinkage, and meanwhile, the external heat-sealing material is subjected to heat shrinkage to form sealing; and S4, cooling for 5-15 seconds in a compression state to complete compression setting. According to the invention, the embedded restraint layer and the externally-wrapped heat-sealing material are cooperatively shrunk, so that high-density compression setting without a mold is realized, the structure is stable, the operation is simple and convenient, and the problems that the existing flexible textile is high in compression packaging resilience rate and depends on an external device are solved.

Description

Technical Field

[0001] The invention relates to the field of packaging, and in particular to a textile compression packaging method. Background Art

[0002] Textiles, as bulk flexible materials, often require packaging and compression during storage and transportation to reduce volume and lower logistics costs. However, existing compression packaging methods often rely on mold forming or external restraint tools, such as rigid pressure plates, strapping tape, or shrink film for compression and fixation. These methods have the following drawbacks: 1. The compression molding effect depends on external forced pressure or mold restrictions, the steps are complicated, and the equipment is highly dependent, making it difficult to achieve automated processing under flexible and simplified conditions; 2. After releasing the external pressure, textiles tend to rebound, resulting in unstable compression effect, affecting transportation loading efficiency and packaging aesthetics; 3. Existing methods generally lack the means to constrain the compressed internal structure. They rely solely on the external covering material to exert shrinkage force, making it difficult to achieve overall uniform tightening. Especially in multi-layer stacking scenarios, problems such as local looseness and deformation of the package are prone to occur.

[0003] In order to solve the above problems, a textile compression packaging method is urgently needed to improve the packaging density and structural stability, simplify the operation process, and be suitable for the compression and transportation needs of flexible textiles of various specifications and forms. Summary of the Invention

[0004] The present invention provides a textile compression packaging method, which is used to solve related technical problems in the background technology.

[0005] The technical solution provided by the present invention is as follows: a method for compressing and packaging textiles, comprising the following steps: S1. Layered embedding and stacking: stacking the textiles to be compressed in ascending order of weight, and embedding a thermally responsive constraint layer between adjacent textile layers to form a package to be compressed; S2, compression molding: applying a compression pressure of 10~80kPa to the package to be compressed to obtain a pre-compressed package; S3. Heat seal activation: While maintaining the compression state, the outer heat seal material is coated and heated. When the overall temperature reaches 60-110°C, the constraining layer undergoes axial contraction under the heat. Simultaneously, the outer heat seal material also contracts, forming a tight heat seal layer. S4. Keep cooling for 5 to 15 seconds while maintaining the compressed state to solidify the compressed state and complete the compression packaging.

[0006] In one embodiment, the constraining layer is a PET mesh belt, an EVA film, or a hot melt adhesive fiber film with heat shrinkage function.

[0007] In one embodiment, in step S2, the pre-compressed package is 10% to 40% of the thickness of the package to be compressed.

[0008] In one embodiment, in step S3, during heat seal activation, after the heat seal material is coated, the heat seal material and the air inside the pre-compressed package are exhausted by vacuum extraction.

[0009] In one embodiment, the heat-sealing material is a film that can shrink in the range of 60-120°C.

[0010] Compared with the prior art, the present invention has the following beneficial effects: (1) The textile compression and packaging method of the present invention adopts a method of embedding constraint layers in layers according to the order of gram weight. By embedding the constraint layer structure between adjacent layers during the textile stacking process and activating the constraint layer during the compression and heat sealing process, the purpose of maintaining the stability of the internal interlayer structure of the textile and tightening and sealing the entire textile in a compressed state is achieved, thereby achieving the technical effect of high-density and high-stability textile compression and packaging without the need for a mold, and further solving the problems of easy rebound in the compressed state and low packaging density in the existing textile compression and packaging process. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic flow chart of the textile compression and packaging method of the present invention. DETAILED DESCRIPTION

[0012] The present invention will be described in detail below with reference to specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several changes and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0013] like Figure 1 As shown, the present invention is a method for compressing and packaging textiles, comprising the following steps: Step S1: Layered embedding and stacking The flexible textiles to be treated (such as knitted fabrics, terry fabrics, woven fabrics, etc.) are classified from small to large according to their mass per unit area (i.e., gram weight), and stacked in this order; and a heat-responsive constraint layer is embedded between each pair of adjacent textile layers to form an initial package to be compressed.

[0014] The thermally responsive constraining layer can be a PET mesh, EVA film, or a heat-shrinkable hot-melt adhesive fiber film. When heated, it shrinks axially, exerting a restraining force on the laminate. This constraining layer facilitates the formation of a relatively regular interlayer structure during subsequent compression and provides sustained compression retention after activation.

[0015] Step S2: Compression molding The package to be compressed formed in step S1 is placed in a compression station and subjected to a compression pressure of 10 to 80 kPa for compression. The compression method can be mechanical plate pressing, cylinder pressurization, or roller extrusion.

[0016] During the compression process, the internal thermally responsive constraint layer is pre-compressed, and the textile layers are pressed tightly together to form a pre-compressed envelope with a thickness controlled at 10% to 40% of the original stacked thickness. This step effectively reduces the envelope's volume, improves space utilization, and creates a stable morphology for the heat-seal activation stage.

[0017] Step S3: Heat seal activation While maintaining the compression state, the outside of the pre-compressed package is coated with a heat-sealing material; the heat-sealing material is a film that can shrink in the range of 60~120℃, and preferably a composite film with an outer layer of a heat-resistant protective layer and an inner layer of a heat-adhesive layer, such as DuPont Surlyn series heat-sealing film.

[0018] After the coating is completed, the entire package is heated to 60-110°C using hot air, infrared or hot plate heating. At this time, the internal constraint layer is activated, axially shrinks and exerts a restraining force between layers, effectively suppressing the rebound tendency between layers.

[0019] At the same time, the heat-sealing material shrinks against the surface of the pre-compressed package under heating, forming a uniformly fitted packaging layer.

[0020] In this embodiment, in order to enhance the packaging tightness, vacuum extraction may be performed before heat sealing to remove residual air between the package body and the film and inside the package body, thereby further improving the compression stability and heat sealing integrity.

[0021] Step S4: Cooling and shaping While maintaining the compressed state, continue cooling the package for 5 to 15 seconds to allow the compressed structure to solidify and set without relaxing. The cooling method can be natural air cooling or setting a cold air device for auxiliary cooling.

[0022] After cooling is completed, the external compression device can be released. At this time, the package body maintains the compressed shape and has good packaging strength, completing the compression packaging of the textiles.

[0023] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe the present invention and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0024] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A method for compressing and packaging textiles, characterized in that: The steps include: S1. Layered embedding and stacking: stacking the textiles to be compressed in ascending order of weight, and embedding a thermally responsive constraint layer between adjacent textile layers to form a package to be compressed; S2, compression molding: applying a compression pressure of 10-80 kPa to the package to be compressed to obtain a pre-compressed package; S3. Heat seal activation: While maintaining the compression state, the outer heat seal material is coated and heated. When the overall temperature reaches 60-110°C, the constraining layer undergoes axial contraction under the heat. Simultaneously, the outer heat seal material also undergoes thermal contraction, forming a tight heat seal layer. S4. Cooling and shaping: Keep cooling for 5 to 15 seconds while maintaining the compressed state to solidify the compressed state and complete the compression and packaging.

2. A textile compression packaging method according to claim 1, characterized in that: The constraint layer is a PET mesh belt, an EVA film, or a hot melt adhesive fiber film with a heat shrink function.

3. A textile compression packaging method according to claim 1, characterized in that: In step S2, the pre-compressed package is 10% to 40% of the thickness of the package to be compressed.

4. A textile compression packaging method according to claim 1, characterized in that: In step S3, heat sealing activation, after the heat sealing material is coated, the heat sealing material and the air inside the pre-compressed package are exhausted by vacuum extraction.

5. A textile compression packaging method according to claim 1, characterized in that: The heat-sealing material is a film that can shrink thermally within the range of 60-120°C.

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