Abstract:
A process for packaging a product (P) arranged on a support (4) comprising unrolling a film (18), moving the film (18) to a packaging assembly (8) defining at its inside a packaging chamber (24), progressively moving a number of supports (4) inside the packaging chamber (24) of the packaging assembly (8), closing the packaging chamber (24) with the film sheets held above the respective support (4), optionally causing one or both of: a gas withdrawal from the hermetically closed packaging chamber (24) and gas injection of a gas mixture of controlled composition, heat sealing the film (18) to said support (4), wherein the heat sealing uses one or more heaters having heating surfaces which are heated for discrete and short time periods only. An apparatus (1) for performing the above process is also disclosed.
Abstract:
An exterior body panel assembly having a Class A painted surface, mold-in color or non-Class A surface, and process of infrared welding components of the assembly. Panels of the assembly are placed on a nesting structure and the inside half of the structures are brought together with the other for a fit check. Panels are separated and an infrared heating fixture then heats the various areas to be heated on the panels. The areas on the panels are heated depending on the thicknesses of the parts at each area and surface geometries to be welded. The parts are immediately clamped back together under pressure for joining and cooling of the joined surfaces in the clamped arrangement.
Abstract:
A process for packaging a product (P) arranged on a support (4) comprising unrolling a film (18), moving the film (18) to a packaging assembly (8) defining at its inside a packaging chamber (24), progressively moving a number of supports (4) inside the packaging chamber (24) of the packaging assembly (8), closing the packaging chamber (24) with the film sheets held above the respective support (4), optionally causing one or both of: a gas withdrawal from the hermetically closed packaging chamber (24) and gas injection of a gas mixture of controlled composition, heat sealing the film (18) to said support (4), wherein the heat sealing uses one or more heaters having heating surfaces which are heated for discrete and short time periods only. An apparatus (1) for performing the above process is also disclosed.
Abstract:
The present disclosure relates to methods for making elastomeric laminates that may be used as components of absorbent articles. In particular, discrete mechanical bonds are applied to a first substrate and a second substrate to secure elastic strands therebetween, wherein the discrete bonds are arranged intermittently along the machine direction. During the bonding process, heat and pressure are applied to the first substrate and the second substrate such that malleable materials of the first and second substrates deform to completely surround an outer perimeter of a discrete length of the stretched elastic strand. After removing the heat and pressure from the first and second substrates, the malleable materials harden to define a bond conforming with a cross sectional shape defined by the outer perimeter of the stretched elastic strand.
Abstract:
본 발명은 프레스 성형장치의 열판 구조 및 이를 이용한 연속 성형방법에 관한 것으로, 연속 성형방법에 있어서, 정해진 길이 단위(재단 폭)보다 작은 길이 단위로 1차 및 2차 겹침 성형작업을 연속적으로 수행함에 따라 경계부분이 상쇄되어 경계부분의 두께 단차를 개선할 수 있으며, 이로 인해 균일한 물성을 얻을 수 있도록 할 뿐만 아니라, 열판 구조에 있어서, 열판의 양측부를 챔버 밖으로 연장하여 돌출시킨 돌출부를 구성하되, 이 돌출부가 챔버 내의 열판 두께보다 얇은 두께로 구성함으로써, 동일한 시간 및 조건(압력, 온도 등)으로 성형작업이 수행되더라도 상기 돌출부에서는 챔버 내의 열판을 통해 가해지는 압력 및 온도보다 작은 압력 및 온도가 가해지게 되며, 이로 인한 공냉 및 온도제어 효과로 인해 상기와 같은 2차 겹침 성형작업을 통한 연속 작업 시, 시트 변형의 억제 및 기포를 제어할 수 있도록 하는, 프레스 성형장치의 열판 구조 및 이를 이용한 연속 성형방법에 관한 것이다.