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公开(公告)号：US06544382B2
公开(公告)日：2003-04-08
申请号：US09440201
申请日：1999-11-15
IPC分类号： B32B3100
CPC分类号： B29C66/81811 , B29C65/222 , B29C65/30 , B29C65/38 , B29C66/0042 , B29C66/1122 , B29C66/349 , B29C66/43 , B29C66/45 , B29C66/71 , B29C66/8122 , B29C66/81262 , B29C66/81422 , Y10T156/1313 , B29K2905/08 , B29K2023/06 , B29K2067/00
摘要： An apparatus and method for heating and cooling a polymer structure employs a tube structure. The tube structure includes a conductive tube and a conductive strip. The tube is composed of a first conductive material having a first electrical resistivity, and the strip is composed of a second conductive material having a second electrical resistivity less than the first resistivity. The strip is connected to only a portion of an outer surface of the tube and extends along a length of the tube. In the method, an impulse of electric current is passed through the tube structure until the strip is heated to a predetermined sealing temperature. The strip and the polymer structure are brought into contact with each other for a dwell time sufficient to generate a heat seal in the polymer structure. A cooling medium is passed through the tube to cool the strip to a predetermined release temperature that facilitates release of the strip from the polymer structure.
摘要翻译： 用于加热和冷却聚合物结构的装置和方法采用管结构。 管结构包括导电管和导电条。 管由具有第一电阻率的第一导电材料组成，并且该带由具有小于第一电阻率的第二电阻率的第二导电材料组成。 条带仅连接到管的外表面的一部分并且沿着管的长度延伸。 在该方法中，电流脉冲通过管结构，直到条被加热到预定的密封温度。 带和聚合物结构彼此接触一段停留时间，足以在聚合物结构中产生热密封。 将冷却介质通过管子以将条带冷却至预定的释放温度，这有利于条带从聚合物结构的释放。
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公开(公告)号：US4493419A
公开(公告)日：1985-01-15
申请号：US548487
申请日：1983-11-03
CPC分类号： B65D33/001
摘要： A bag pack of a plurality of stacked thermoplastic bag structures each bag comprising a front and rear bag wall and an open mouth top portion. Handles are integral extensions of the bag walls. The bags are bonded together via bonding means in association with said handles. Individual bags may have stress relief curves in the handles and the bag mouth opening.
摘要翻译： 每个袋子包括多个层叠的热塑性袋结构的袋包，其包括前后袋壁和开口顶部。 手柄是袋壁的整体延伸。 袋子通过与所述手柄相关联的粘合装置粘合在一起。 单个袋子可能在手柄和袋口开口处具有应力释放曲线。
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公开(公告)号：US06196717B1
公开(公告)日：2001-03-06
申请号：US09515140
申请日：2000-02-29
IPC分类号： B65D3310
CPC分类号： B65D33/065 , B31B70/872 , B65D33/002 , Y10S493/926
摘要： A method of forming a plurality of easy to open handle bags including the steps of providing a flattened tube of thermoplastic material oriented in a generally longitudinal direction. The flattened tube has a first longitudinal side edge and a second longitudinal side edge, a transverse lower heat seal, and a transverse upper heat seal. The tube also has first, second, and third sections. The second section being disposed between the first and third sections. The first section is joined to the second section along a generally longitudinal first fold line. The second section is joined to the third section along a generally longitudinal second fold line. The second section is cut along a generally transverse first cut line extending between the first and second fold lines. The first section is folded over the second section along the first fold line. The third section is folded over the previously folded-over first section along the second fold line such that the first, second, and third sections overlap one another. The overlapped first, second, and third sections are cut along a generally longitudinal second cut line that intersects the first cut line, the first fold line, and the second side edge at one end and intersects the upper heat seal at the other end. The overlapped first, second, and third sections are then cut along a generally longitudinal third cut line that intersects the first cut line, the second fold line, and the first side edge at one end and intersects the upper heat seal at the other end.
摘要翻译： 一种形成多个容易打开的手提袋的方法，包括以下步骤：提供在大致纵向上定向的热塑性材料的扁平管。 扁平管具有第一纵向侧边缘和第二纵向侧边缘，横向下部热封和横向上部热封。 该管还具有第一，第二和第三部分。 第二部分设置在第一和第三部分之间。 第一部分沿着大致纵向的第一折线连接到第二部分。 第二部分沿着大致纵向的第二折线连接到第三部分。 第二部分沿着在第一和第二折叠线之间延伸的大致横向的第一切割线切割。 第一部分沿着第一折线折叠在第二部分上。 第三部分沿着第二折叠线折叠在先前折叠的第一部分上，使得第一部分，第二部分和第三部分彼此重叠。 重叠的第一，第二和第三部分沿着与第一切割线，第一折叠线和第二侧边缘在一端相交的大致纵向的第二切割线切割，并且在另一端与上部热封相交。 然后，重叠的第一，第二和第三部分沿着与第一切割线，第二折叠线和第一侧边缘相交的大致纵向的第三切割线切割，并在另一端与上部热封相交。
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公开(公告)号：US4613988A
公开(公告)日：1986-09-23
申请号：US584836
申请日：1984-02-29
申请人： Robert T. Maddock
发明人： Robert T. Maddock
CPC分类号： B65D31/10 , Y10S383/903
摘要： A plastic film sack having gussetted side walls, and in the bottom of said sack, a heat-seal stripe welding together the four film layers in the gusseted regions of the sack and a heat seal stripe welding together the two film layers between said gusseted regions; and between the heat-seal stripes of the four film layers and the heat-seal stripe of the two film layers are unsealed, arcuate stress-relief regions and the method of forming the same.
摘要翻译： 一种具有角撑板侧壁的塑料薄膜袋，并且在所述袋的底部中，将密封条条焊接在袋的角撑板区域中的四个薄膜层和将所述两个薄膜层之间的所述角撑板区域焊接在一起的热封条 ; 并且在四个膜层的热封条之间和两个膜层的热封条之间是未密封的，弓形应力消除区域及其形成方法。
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5.发明授权Method of forming a thermoplastic film sack having a stress relieved bottom gusset seal line 失效形成具有应力消除底部角撑板密封线的热塑性薄膜袋的方法
公开(公告)号：US4588392A
公开(公告)日：1986-05-13
申请号：US725975
申请日：1985-04-22
申请人： Robert T. Maddock
发明人： Robert T. Maddock
CPC分类号： B65D31/10 , Y10S383/903 , Y10S493/926
摘要： A plastic film sack having gussetted side walls, and in the bottom of said sack, a heat-seal stripe welding together the four film layers in the gusseted regions of the sack and a heat seal stripe welding together the two film layers between said gusseted regions; and between the heat-seal stripes of the four film layers and the heat-seal stripe of the two film layers are unsealed, arcuate stress-relief regions and the method of forming the same.
摘要翻译： 一种具有角撑板侧壁的塑料薄膜袋，并且在所述袋的底部中，将密封条条焊接在袋的角撑板区域中的四个薄膜层和将所述两个薄膜层之间的所述角撑板区域焊接在一起的热封条 ; 并且在四个膜层的热封条之间和两个膜层的热封条之间是未密封的，弓形应力消除区域及其形成方法。
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公开(公告)号：US6059707A
公开(公告)日：2000-05-09
申请号：US049402
申请日：1998-03-27
CPC分类号： B65D33/065 , B65D33/002 , B31B2219/909 , Y10S493/926
摘要： A method of forming a plurality of easy to open handle bags including the steps of providing a flattened tube of thermoplastic material oriented in a generally longitudinal direction. The flattened tube has a first longitudinal side edge and a second longitudinal side edge, a transverse lower heat seal, and a transverse upper heat seal. The tube also has first, second, and third sections. The second section being disposed between the first and third sections. The first section is joined to the second section along a generally longitudinal first fold line. The second section is joined to the third section along a generally longitudinal second fold line. The second section is cut along a generally transverse first cut line extending between the first and second fold lines. The first section is folded over the second section along the first fold line. The third section is folded over the previously folded-over first section along the second fold line such that the first, second, and third sections overlap one another. The overlapped first, second, and third sections are cut along a generally longitudinal second cut line that intersects the first cut line, the first fold line, and the second side edge at one end and intersects the upper heat seal at the other end. The overlapped first, second, and third sections are then cut along a generally longitudinal third cut line that intersects the first cut line, the second fold line, and the first side edge at one end and intersects the upper heat seal at the other end.
摘要翻译： 一种形成多个容易打开的手提袋的方法，包括以下步骤：提供沿大致纵向方向定向的热塑性材料的扁平管。 扁平管具有第一纵向侧边缘和第二纵向侧边缘，横向下部热封和横向上部热封。 该管还具有第一，第二和第三部分。 第二部分设置在第一和第三部分之间。 第一部分沿着大致纵向的第一折线连接到第二部分。 第二部分沿着大致纵向的第二折线连接到第三部分。 第二部分沿着在第一和第二折叠线之间延伸的大致横向的第一切割线切割。 第一部分沿着第一折线折叠在第二部分上。 第三部分沿着第二折叠线折叠在先前折叠的第一部分上，使得第一部分，第二部分和第三部分彼此重叠。 重叠的第一，第二和第三部分沿着与第一切割线，第一折叠线和第二侧边缘在一端相交的大致纵向的第二切割线切割，并且在另一端与上部热封相交。 然后，重叠的第一，第二和第三部分沿着与第一切割线，第二折叠线和第一侧边缘相交的大致纵向的第三切割线切割，并在另一端与上部热封相交。
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