Decorative heat preserving plate and refrigerating device using same
A technology of thermal insulation board and packaging film, which is applied in the field of decorative thermal insulation board, can solve the problems of affecting the flatness of the product plane and reducing the overall thermal insulation performance of the VIP board, and achieve the effects of stable and controllable quality, long-term stable thermal conductivity, and improved overall performance
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Embodiment 1
[0078] Such as Figures 1 to 2, The decorative insulation board in this embodiment includes: a VIP board 3 and a cellulose board 4 bonded to both sides or a single side of the VIP board 3 by pressure-sensitive adhesive (ie, acrylic glue) or silica gel. Among them, acrylic adhesive has many advantages such as room temperature curing, convenient operation, high bonding strength, fast positioning, high elasticity, and non-toxic cured product; acrylic adhesive is a one-component, with excellent water resistance, heat resistance, cold resistance, aging resistance , acid and alkali resistance, corrosion resistance, oil resistance and no whitening and other excellent characteristics, suitable for refrigerators, freezers and other oily environments.
[0079] The outer surface of the cellulose board 4 is provided with a decorative layer, and can be carved, painted, and variously decorated.
[0080] The sealing tape or sealing strip 7 around the VIP board, and the sealing tape or seali...
Embodiment 2
[0087] On the basis of Embodiment 1, this embodiment has the following modifications:
[0088] Such as Figures 6 to 8 , the packaging film 2 is two sheets connected end to end, and the corresponding two end to end joints 21 are on the upper or lower plane of the core material at the same time, or on the edge of the core material 1 at the same time on, or on the upper and lower planes of the core material 1 respectively.
Embodiment 3
[0090] The production method of the VIP plate of above-mentioned embodiment 1 or 2, comprises the steps:
[0091] A. After covering the upper and lower planes and the left and right sides of the core material with at least one packaging film, the head and tail are hot-melt connected, and the head and tail connection is not on the left and right sides of the core material;
[0092] B. The extensions of the packaging film that extend out of the front and rear sides of the core material are folded symmetrically toward the center of the inner side along the four edges of the front and rear sides of the core material; during the folding process, the The part of the opening of the extension part adjacent to the short side is M-shaped;
[0093] C. After being folded over, the parts of the extension part adjacent to the front and rear sides of the core material are respectively closely attached to the front and rear sides of the core material;
[0094] D. Hot-melt seal the opening of...
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