Method for hotly rounding middle back of outer shell of round back photo album

A leather shell and round back technology, which is applied in the binding of book cases, albums, books, etc., can solve the problems of wrinkling of the round back, appearance and functional impact, and line-like cracks on the round back, etc. problems, to achieve the effect of buffering rapid deformation

Active Publication Date: 2013-10-23
CRE8 DIRECT NINGBO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The stress tolerance range of the dried leather shell is small. Under the action of the large force of the ironing equipment for a short time, the round back is prone to line-

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: A method for rounding the middle back of the leather case of a round back album, comprising the following steps:

[0014] (1) Lining: In an environment with a relative humidity of 60% and a temperature of 20°C, a layer of glue is evenly coated on the inner surface of the finished leather shell, and a layer of lining paper is lined on the glue to control the mounting. After the lining is completed, the humidity of the leather shell is 18%;

[0015] (2) Press the round back: place the middle back of the leather shell obtained in step (1) immediately on the base of the ironing mold cushioned with soft cushioning materials, and put the leather shell on the opposite side of the pressing head on the ironing equipment. Apply a pressure of 20kgf to the hot round mold of the shell to form a round back on the middle back of the leather shell. At the same time, set the temperature of the indenter to 160°C, control the action time of the indenter at 4S, and heat and s...

Embodiment 2

[0017] Embodiment 2: Other parts are the same as Embodiment 1, the difference is that the relative humidity in step (1) is 70%.

Embodiment 3

[0018] Embodiment 3: Other parts are the same as Embodiment 1, the difference is that the relative humidity in step (1) is 80%.

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PUM

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Abstract

The invention discloses a method for hotly rounding the middle back of an outer shell of a round back photo album. The method is characterized by comprising the following steps: (1) mounting, namely uniformly applying a layer of glue to the inner surface of the finished outer shell in an environment with the relative humidity of 60%-80% and the temperature of 20-25 DEG C, mounting a layer of lining paper on the glue, and controlling the humidity of the outer shell after mounting the lining paper to be 18%-20%; (2) pressing a round back, namely instantly arranging the middle back of the outer shell obtained in the step (1) into a base of a hot rounding mould supported by a soft buffer material, applying a pressure of 20-35 kgf to the hot rounding mould with the outer shell through a pressing head on hot rounding equipment to enable the middle back of the outer shell to form the round back, and meanwhile, setting the temperature of the pressing head to be 160-190 DEG C, controlling the action time of the pressing head to be 4-6 s and heating and shaping the round back formed by stamping to obtain a smoother round back. The method has the advantage that the smoother round back can be easily obtained by the method.

Description

technical field [0001] The invention relates to a method for making a round-backed photo album, in particular to a method for rounding the middle back of the leather shell of the round-backed photo album. Background technique [0002] In the existing technology, after the lining of the leather shell is completed for the round-backed album, the humidity of the leather shell is generally above 20%. If it is ironed immediately, the cover of the film will produce pores. Dry in the existing environment for at least 24 hours. When the humidity of the leather shell reaches 10%-14%, put the leather shell in a special mold, and stamp the special mold with the ironing equipment to make the middle back of the leather shell deform into a circle back, and heat it to set. The stress tolerance range of the dried leather shell is small. Under the action of the large force of the ironing equipment for a short time, the round back is prone to line-shaped cracks. At the same time, the deforma...

Claims

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Application Information

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IPC IPC(8): B42F5/02B42C7/00
Inventor 王桂强
Owner CRE8 DIRECT NINGBO CO LTD
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