| 摘要 |
A thermally insulated roller shutter door particularly for refrigerated vehicles comprises a plurality of laths (10) each formed of a channel section (11) with cooperating hinge formations (12, 13) along the opposed longitudinal edges thereof so that adjacent laths hingedly interlock with each other. The channel section (11) has a laminate (14) of an outer high density foam layer (15) and an inner low density foam layer (16), the high density layer (15) primarily providing impact damage resistance and the low density layer (16) primarily providing the thermal insulation. A two-part (32, 33) guide channel (31) in which run wheels (29) secured to the laths (10) has both lip seals (35, 36) and a brush seal (37) to prevent heat loss between the sides of the roller shutter and the surrounding opening.
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