TWM625814U - cutting mat - Google Patents

Abstract

The present invention provides a cutting pad, which has a plurality of stacked thin layers, and the materials of the thin layers are respectively the same or different thermoplastic elastomers, and the thin layers are hot-pressed to form a laminated structure. Since the cutting pad uses a thermoplastic elastomer, there is no need to add plasticizers, and there is no need to apply an adhesive layer between adjacent thin layers, which facilitates the recycling of old cutting pads.

Description

cutting mat

The new model relates to a plastic soft pad, in particular to a cutting pad.

Regardless of adults and children, when creating art work on the table, a layer of soft cushion, commonly known as a cutting mat, is often placed on the table. Therefore, even if you need to use difficult-to-clean paints on the table, or use a knife to cut Merlot materials, the table can be protected and not easily stained.

The first-generation conventional cutting mat uses polyvinyl chloride (Polyvinyl Chloride, PVC), and the three-layer PVC layer is hydraulically formed. The advantage is that it can be cut to stop the density; the disadvantage is that it has peculiar smell, contains plasticizers and trace heavy metals, and after a long time of use, it is easy to embrittle or become soft, and it has the problem of poor weather resistance.

The second-generation conventional cutting mat is a sandwich structure formed by using two layers of polyolefin elastomer (thermoplastic olefin, TPO) sandwiching a layer of polypropylene (PP). In this structure, the elasticity of the surface TPO layer is used to provide a good touch during use, and the intermediate PP layer is used to provide sufficient hardness to prevent the cutter from scratching or piercing the cutting pad when cutting materials on the cutting pad. desktop. Therefore, although the second-generation conventional cutting mat has the advantages of being non-toxic and environmentally friendly, it also has the disadvantage of obvious cutting marks, and after a long time of use, PP is easily brittle, so it also has the problem of poor weather resistance. In addition, due to the use of The sandwich structure, which uses two polymers, requires a more complicated method for recycling, which is not conducive to the recycling of old cutting mat materials.

Therefore, it is necessary to improve the problems of existing cutting pads and develop environmentally friendly, non-toxic and durable cutting pads.

Therefore, the present invention provides a cutting pad, which includes a laminated structure, which is formed by laminating and hot pressing a plurality of thin layers, and the materials of these thin layers are thermoplastic elastomer (TPE).

According to one embodiment, the monomer of the thermoplastic elastomer includes styrene.

According to another embodiment, the thermoplastic elastomer includes a copolymer of styrene-butadiene-styrene (SBD), styrene-ethylene/butylene-styrene (Styrene-Ethylene/Butadiene) -Styrene; SEBS) copolymer, styrene-ethylene/propylene-styrene (Styrene-Propylene/Butadiene-Styrene; SEPS) copolymer or any combination of the above.

According to yet another embodiment, the materials of these thin layers are the same or compatible thermoplastic elastomers.

The above-mentioned cutting mat not only has the advantages of environmental protection and non-toxicity, but also has the advantages of preventing the cutting marks from being dense and having good weather resistance.

100: Laminated structure

1, 2...n-1, n: thin layer

FIG. 1 is a schematic cross-sectional structure diagram of a cutting pad according to an embodiment of the present invention.

FIG. 1 is a schematic cross-sectional structure diagram of a cutting pad according to an embodiment of the present invention. In FIG. 1 , the dicing pad is composed of a laminated structure 100 , and the laminated structure 100 is formed by lamination and hot pressing of multiple thin layers 1 , 2 . . . n−1 , n. The number of thin layers can be adjusted according to the desired thickness and is not particularly limited.

The materials of these thin layers 1, 2...n-1, n are respectively thermoplastic elastomer (TPE), and the monomer of the thermoplastic elastomer includes styrene. Therefore, the thermoplastic elastomer can be, for example, a copolymer of styrene-butadiene-styrene (SBD), styrene-ethylene/butylene-styrene (Styrene-Ethylene/Butadiene-Styrene) , SEBS) copolymer, styrene-ethylene/propylene-styrene (Styrene-Propylene/Butadiene-Styrene, SEPS) copolymer or any combination of the above.

The thermoplastic elastomers of these thin layers 1, 2 . . . n-1, n can be the same material, or compatible but dissimilar materials. If the thermoplastic elastomers of these thin layers 1, 2...n-1, n are made of different materials, the compatibility of the different thermoplastic elastomers should be considered. Compatibility means that between any two adjacent layers of these thin layers 1, 2...n-1, n, it can be directly integrated by lamination and hot pressing without adding other thermoplastics as adhesive layers. The laminated structure 100.

The hardness of the above-mentioned thin layers 1, 2...n-1, n may be, for example, a Shore hardness of about 40-80 HA, so that the resulting cutting pad can have a desired hardness. In the above-mentioned stacked junction In the structure 100, the thin layers located on the surface layer and near the surface layer (such as thin layer 1, n or thin layer 1, 2, n or thin layer 1, 2, n-1, n, but not limited thereto), the soft The hardness is usually softer to provide a better tactile feel to the user. Thin layers located in the middle or near the middle of the laminated structure 100 (such as thin layers 2, n-1 and the thin layers not shown are omitted, or the thin layers not shown are omitted in FIG. 1, but not limited thereto), Its hardness is usually hard to prevent the cutting pad from being scratched or pierced by the knife.

To modify the softness and hardness of the thermoplastic elastomer, it can be achieved by adjusting the monomer composition and polymerization degree of the thermoplastic elastomer. Since this is a matter that can be adjusted by a person with ordinary knowledge who is familiar with the field to which this case belongs, based on existing knowledge and limited experiments, it will not be repeated here. In addition to adjusting the monomer composition and polymerization degree of the thermoplastic elastomer, some inorganic nanoparticles can also be added to adjust it. The material of the above-mentioned inorganic nanoparticles can be, for example, calcium carbonate, calcium sulfate, or a combination thereof.

Based on the above, the dicing pad provided by the present disclosure has the following advantages:

(1) Since the material of the cutting pad is all thermoplastic elastomer, no plasticizer needs to be added. Therefore, compared with the conventional use of PVC, it has the advantages of environmental protection and non-toxicity, and also provides users with a good touch.

(2) The cutting pad adopts an integrated laminated structure formed by laminating and hot pressing a plurality of thin layers. Therefore, air bubbles are less likely to remain in the dicing pad, resulting in a problem of poor quality.

(3) When the thermoplastic elastomer of the cutting pad adopts a polymer having a styrene monomer, sufficient elasticity and hardness can be provided. Therefore, the obtained cutting pad can have the advantages of preventing the cutting marks from being dense, and the cutting pad is not afraid of being scratched or pierced by a knife, and also provides the advantage of good weather resistance.

(4) When the thermoplastic elastomer of the cutting pad adopts the same or compatible polymer, the glue layer can be omitted between the two adjacent thin layers, which greatly simplifies the process and facilitates the recycling of the old cutting pad. .

100: Laminated structure

1, 2...n-1, n: thin layer

Claims (6)

A cutting mat includes: a laminated structure with a plurality of stacked thin layers, and the materials of the thin layers are thermoplastic elastomers respectively. The dicing pad of claim 1, wherein the thin layers are thermally pressed to form the laminated structure. The cutting pad of claim 1, wherein the monomer of the thermoplastic elastomer comprises styrene. The cutting pad of claim 3, wherein the thermoplastic elastomer comprises styrene-butadiene-styrene copolymer, styrene-ethylene/butylene-styrene copolymer, styrene-ethylene/propylene - Copolymers of styrene or any combination of the above. The cutting pad of claim 1, wherein the thin layers are made of the same thermoplastic elastomer. The cutting pad of claim 1, wherein the Shore hardness of the laminated structure is 40-80 HA.

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