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公开(公告)号:US5004514A
公开(公告)日:1991-04-02
申请号:US407296
申请日:1989-09-14
IPC分类号: B42D3/04
CPC分类号: B42D3/04 , Y10T156/1054 , Y10T156/1057
摘要: A protective book covering including a relatively long piece of sheet material and a relatively short piece of sheet material overlying the long piece, the longitudinal edges of the two sheets being sealed together. A seal and tear line extending transverse to their longitudinal edges joins the two pieces and forms a line of severance along which the pieces can be torn to produce two units, each unit having a pocket adjacent to the seal and tear line for accommodating one of the covers of a book. One of the units has a section, extending from the pocket of that unit, long enough to wrap around the spine of the book, and be secured to the other unit. The sheet material is preferably transparent plastic. The book covering can be made in a continuous manner by providing independent lengths of relatively wide and relatively narrow plastic sheet material, and placing the lengths in face-to-face contact so that their longitudinal axes extend in the same direction. The two lengths are heated sealed together along a line parallel to their longitudinal axes but spaced form their longitudinal edges, and both lengths are heat sealed together and severed along lines transverse to their longitudinal axes. A strip of adhesive may be applied along one longitudinal edge of the wide length of material.
摘要翻译: 一种包括相对长的片材片和覆盖在长件上的相对较短片材的保护书,两片的纵向边缘被密封在一起。 横向于其纵向边缘延伸的密封和撕裂线连接两个部分,并形成一条切断线,沿着该线切割,可以撕裂碎片以产生两个单元,每个单元具有邻近密封和撕裂线的口袋,用于容纳 一本书的封面。 其中一个单元有一个部分,从该单元的口袋延伸,足够长的时间可以绕着书的脊柱,并固定到另一个单元。 片材优选为透明塑料。 可以通过提供相对较宽且相对较窄的塑料片材的独立长度,并且将长度面对面接触使得它们的纵向轴线沿相同方向延伸,可以连续地制作书本覆盖物。 两个长度沿着平行于其纵向轴线的线加热密封在一起,但间隔开形成它们的纵向边缘,并且两个长度被热密封在一起,并且沿着与其纵向轴线横切的线切断。 粘合剂条可以沿着宽长的材料的一个纵向边缘施加。
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公开(公告)号:US4893837A
公开(公告)日:1990-01-16
申请号:US330213
申请日:1989-03-29
IPC分类号: B42D3/04
CPC分类号: B42D3/04 , Y10T156/1054
摘要: A protective book covering including a relatively long piece of sheet material and a relatively short piece of sheet material overlaying the long piece, the longitudinal edges of the two sheets being sealed together. A seal and tear line extending transverse to their longitudinal edges joins the two pieces and forms a line of severance along which the pieces can be torn to produce two units, each unit having a pocket adjacent to the seal and tear line for accommodating one of the covers of a book. One of the units has a section, extending from the pocket of that unit, long enough to wrap around the spine of the book, and be secured to the other unit. The sheet material is preferably transparent plastic. The book covering can be made in a continuous manner by providing independent lengths of relatively wide and relatively narrow plastic sheet material, and placing the lengths in face-to-face contact so that their longitudinal axes extend in the same direction. The two lengths are heat sealed together along a line parallel to their longitudinal axes but spaced form their longitudinal edges, and both lengths are heat sealed together and severed along lines transverse to their longitudinal axes. A strip of adhesive may be applied along one longitudinal edge of the wide length of material.
摘要翻译: 一种包括相对长的片材片和覆盖在长片上的较短片材的保护书,两片的纵向边缘被密封在一起。 横向于其纵向边缘延伸的密封和撕裂线连接两个部分,并形成一条切断线,沿着该线切割,可以撕裂碎片以产生两个单元,每个单元具有邻近密封和撕裂线的口袋,用于容纳 一本书的封面。 其中一个单元有一个部分,从该单元的口袋延伸,足够长的时间可以绕着书的脊柱,并固定到另一个单元。 片材优选为透明塑料。 可以通过提供相对较宽且相对较窄的塑料片材的独立长度,并且将长度面对面接触使得它们的纵向轴线沿相同方向延伸,可以连续地制作书本覆盖物。 两个长度沿着与其纵向轴线平行的线热封在一起,但间隔开形成它们的纵向边缘,并且两个长度被热密封在一起,并且沿着与其纵向轴线横切的线切断。 粘合剂条可以沿着宽长的材料的一个纵向边缘施加。
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